Design

The design of the RM850x Shift is where all the excitement and innovation come from. But starting off with the packaging the PSU comes encased in plastic wrapping and cardboard protection ends, whilst the cables and accessories also come in plastic. We have seen Corsair moving on from this type of packaging as in our HX1000i review where that was mostly in cardboard packaging so it could be that moving on we'll see the same in newer models.

The fully modular power supply comes with a range of cables to use in your build. They also come in white and so do the zip ties you get to match and cable manage your PC in a nice. Although neither the kettle plug nor the screws match the colorway but those aren't as key to the white build you're going for if you are with this model. Being an ATX 3 PSU as well it has native support for the latest Nvidia graphics cards with the 12VHPWR connector makes it a lot nicer to use without an adapter.

Even though it still has its own issues, looking at Corsair's site it seems to also have been updated to an even newer standard. The newer ATX 3.1 standard with the 12V-2X6 spec from PCI-SIG is looking to stop all those burning power cables that have plagued Nvidia so you should have a bit more peace of mind.

Corsair RM850x Shift White brings plenty of innovation and uniqueness to the PSU market and updates the popular model

But the big thing with the unit is of course the side connectors. Moving it from the front where you may have a harder time working with it down the line, it's now easier to change out the cables if you have the right case to support it. It also comes in white which is a bit less common in the PC market but it has its niche for those who want that white build and want to pay the premium for the extra.

With the shifted connectors they also don't run in the same orientation either. As a PCIe connector and motherboard connectors are spun around, which doesn't change too much apart from the look of the connections. They also utilize Type 5 Corsair cables which are a bit smaller and fiddlier but with a good separation between the ports it's not the worst. But if you are after custom cables there are not really pre-done options from CableMod and the like so you have to custom order them making it a bit more of a faff unless Corsair's own offering is sufficient.

With the 850W rating, you do get a good selection of cables already and should give you a good length utilization from the PSU. That goes for the build quality and components too. Utilizing a fluid dynamic bearing fan it comes with allows it to last a while and perform for years to come and do well for them too.

Size

The RM850x Shift is a standard ATX and doesn't extend much further than the cube it is with a 160mm length. That makes it compatible with a lot of cases already but not quite an SFX size if you want a small build. Although it does require you to look into the PC case specs more closely, since most will be having the cables come out towards the side panel, you're going to need a bit more clearance. Corsair recommends the case be at least 210mm (8.3") wide and have enough space in the PSU basement to accommodate the cables.

Performance

Powering up our test bench with the power supply we ran it at full power to see how well it did via HWinfo and tracking the power draw from the wall. Our setup is made up of the following components:

With a combined TDP of around 520W for the CPU and GPU, the recommendation is around 750W. That makes the RM850x Shift a safe choice for a powerful build even up to a 4090. Even then that is a good amount of power we expect to pull through the power supply and with the inefficiencies that can accumulate. For the testing, we put it through a full load via Furmark 2's CPU and GPU stress tests to get the maximum power from it.

A strong choice for new builds for the latest hardware with future proof for any others down the line as well

Even without the full load, the idle power draw was around 126W as seen on our power meter below. But loading up the system and letting it settle it jumped up to 705W with the CPU and GPU combining to reach around 570W. As expected the PSU has no trouble keeping up with it. Plus with the fan spinning up it doesn't produce a lot of noise at all and doesn't make any noises that would make it stand out from your build already.

We also look at what the Cybenetics testing found about this power supply as well. As a newer standard, it brings a more in-depth testing setup to put power supplies through the paces and see how they perform. Although not our specific unit nor the white version it is the same model and should be a good indication of the performance expected.

At 115V the PSU achieved an average efficiency of 88.7%, with the 5VSB sitting more around 77.8%, while the noise output was indeed tested to only be around 22.84 dB(A). Whilst at 230V and what we ran it at it averages 90.8% efficiency with the 5VSB at 78.1%, and the noise was measured at a tad higher of 23.03 dB(A). All in all a good performance even though it does not quite reach the same efficiency levels as other Gold models it's still acceptable.

Warranty

The RMx series gets long-term support from Corsair. That includes the RM850x which comes with 10 years of warranty, which is definitely a long-term choice for a power supply. This shows the high-quality build and components going into it as it is expected to last for many builds down the line, simplifying the decision process for those as well.

GPUs to pair with the PSU

With the power behind the RM850x Shift, there's no GPU you can't power in the consumer market right now. Even the top-performing RTX 4090, but you're likely going to want to go for a white graphics card with plenty of power. In that case, the RTX 4080 Super is a good option like the ROG Strix White we have below. The other top choice is the RX 7900 XTX from AMD's side, although it falls behind compared to the competition it still is a strong gaming graphics card for 4K performance. Although it's a bit harder to find a white model for that one.

Conclusion

The Corsair RM850x Shift White is much like the RM1000x Shift we reviewed, just in a bit more compact and lower power form, oh and in a different color. But that just makes it the extra bit unique to the innovative Shift aspect of the power supply. A strong choice for new builds for the latest hardware with future proof for any others down the line as well.

But the two key aspects of this unit are what make it a more premium choice. Coming in at $169.99 is a premium tax for the color and design difference. So if it's for a specific build where it can shine, then it makes the most sense otherwise a standard RM850x is also an appropriate choice and for less.

That said, there aren’t specific benchmarks like you’d find with a CPU, which would tell how a PSU performs, which can make selecting one a bit challenging. On top of that, there is a sea of options available from various brands, which is great, but too many options can get confusing. 

So, if you find yourself in the same boat, we’ve got you covered. We took the liberty of doing the research for you and put together this in-depth guide that lists multiple options, their details, and the pros and cons so you can make an informed decision. So, without further ado, let’s get right into it.

Products at a glance

How we picked

It comes as no surprise that PSUs don’t get the limelight that CPUs or GPUs get because they lack the bells and whistles or simply the “wow” factor. That said, a PSU is the most important component in any build as it is responsible for ensuring that every component gets the necessary power and saves them in case of a surge. 

So, considering its purpose, we take into account the efficiency, fan size, capacitors, form factor, and modularity of each PSU, test them in-house, and present you with a list of contenders that were able to tough it out. If you’re interested in learning how we test our CPUs, GPUs, routers, and printers, check out our PC Guide Testing Lab, where we explain the process in detail. Besides that, we’ve also explained how we test and review products to provide the utmost clarity to our readers.

Corsair is known for producing many components, and its power supplies are well-liked among users. For our top pick, we went with the Corsair RM750x. 

This is an ATX power supply unit with dimensions of 150mm W x 86mm H x 160mm L (5.9” x 3.3” x 6.2”). What this means is that it doesn’t have the form factor you’d find in an SFX PSU, but it should comfortably sit in mid- and full-tower cases. An advantage of ATX power supplies is better heat management due to their size. Since the internal components aren’t cramped, the thermal output has more space to dissipate. 

The RM750x is also fully modular, meaning the cables aren’t attached to it. This should allow you to only connect the cables you want and put the rest of them back in the box, leading to less clutter and better cable management. As to what cables come with the RM750x, you should get the following:

These cables should be more than enough for even the most high-end setups and should ensure that you can power everything adequately in your build. 

This PSU has an 80-plus efficiency rating of Gold, which means that it should be at least 87% efficient at 50% load. Considering the efficiency of any PSU at 50% load is a sweet spot as it isn’t under a lot of load or sitting completely idle. However, according to Cybernetic, the RM750x is 88.397% efficient at 115V and 90.485% efficient at 230V. 

These percentages are great as they showcase minimum electricity loss and maximum utilization of the PSUs draw from the socket. This also means lower electricity bills in the long run.  

Regarding its noise output, according to Corsair's quick start guide for RM750x, it should generate less than 5dB at 300W; for reference, a whisper, generally, is around 30dB. The higher you go, the more sound it’ll make, but at its maximum operational capacity, 750W, the noise level should be around 35-36dB. 

It also features a 135mm magnetic levitation or maglev fan. Due to the magnetic separation, these fans don’t have any moving parts coming in contact. In other PSUs, bearings and fluid keep the fan spinning, but as time goes on, the fluid can dry up, leading to increased friction, noise, temperature, and the eventual failure of the fan or even the PSU. However, since maglev fans don’t have any moving parts coming in contact, they have a longer lifespan and almost no noise. 

This RM750x also has a Mean Time between Failure (MTBF) of 100,000 hours. To put things into perspective, that means the PSU or any internal component can fail in 11 years. While this isn’t a definitive value, and the output can change depending on various external factors such as temperature, surge, or physical damage, it is good to know that a reliable PSU is powering your rig. 

Also, it has a 10-year warranty, so if it fails, you can get it repaired or replaced during that time. What more could you ask for? 

Lastly, it comes with Overvoltage Protection (OVP), Undervoltage Protection (UVP), Short Circuit Protection (SCP), Overtemperature Protection (OTP), and Overpower Protection (OPP). These protection technologies help ensure the PSU's longevity and prevent PC components from frying.

To help you understand these technologies, we’ve explained them below. 

Overall, the RM750x is a solid power supply unit with excellent protection features, an aesthetic design, a low noise output, and, best of all, its fully modular nature. 

What users say

According to Amazon reviews, this power supply unit has a stable output, great efficiency, low acoustics, and the ability to power various setups. One reviewer stated: “I fully recommend this product if you want enough power to provide for any gaming build with a good amount of headroom for future hardware that may consume more power.”

Next, we have the perfect PSU for all the minimalist design enthusiasts or those with a smaller PC case, the Corsair SF850L. We had the pleasure of testing this PSU in-house, and in our review, we found that it has great performance and efficiency, but the small form factor contributes to some extra noise. 

This PSU has dimensions of 130mm L x 125mm W x 63.5mm H (5.11” x  4.9” x 2.5”), making it much smaller than ATX power supplies and enabling it to comfortably fit inside small PC cases. While SFX PSUs do have the advantage in smaller spaces, their internal components pay the price for it as they have less space between them.

This can lead to overheating issues if not adequately cooled down. That said, this power supply unit has a 120mm Fluid Dynamic Bearing (FDB) fan, which should help keep its temperature at manageable levels. These fans are quiet and can be mounted in various orientations without compromising the fan spin.

That said, during our testing, it produced 36.09dB at 115V and 35.92dB at 230V. This aligns with its Cybernetics rating of Standard+, which is for the 35dB to 40dB noise range. While it isn’t very loud, generally, 40dB is compared to the sound level of a library or bird calls; it is comparatively more audible than other PSUs on our list. 

As a small form factor choice, it provides great power and performance with great efficiency. 

Regarding its efficiency, it has two ratings: 80 Plus Gold and Cybernetics gave it a platinum rating. However, its average efficiency in our tests was 90.577% at 115V and 92.33% at 230V. This means it certainly matches Cybernetics' platinum standard, so it's like getting a platinum PSU for the price of a gold PSU. 

This PSU is also fully modular, meaning you can pick and choose which cables to use and reduce the clutter of additional wires. With this PSU, you should get:

A neat aspect of this power supply is that despite its small form factor, it still has the capability to output 850W of power on the single +12V rail and 150W on the multi, +3.3V, and +5V, rails. This means that you should be able to get more than enough juice to power your rig and comfortably overclock your GPU and the CPU without worrying about low power issues or crashing. 

Along with its small size, it is also fully modular, which is great for cable management but also allows you to add various components when the need arises. On top of that, it has the same 100,000 MTBF hours as our top pick. However, it only has a seven-year warranty, which is less than RM750x’s ten years, but it should still be enough to shield your PSU through various upgrades and any potential failure or damage.

Last, it comes with a handful of protection technologies, the same as the RX750x. However, it also has Catastrophic Failure Protection (CFP), which ensures that the PSU shuts down in case of failure due to flame, fused PCB conductor, charred PCB, smoke, etc. 

So, all things considered, the SF850L is another solid addition from Corsair, and given its performance and price tag, it is worth the investment if you’re on the market for an SFX PSU. 

What users say

The user reception of the Corsair SF850L is massively positive, and its reviews praise it for its compact design, efficiency, and stable performance. Many reviewers were pleased with its quiet operation, which should let you know that 35-36db isn’t deafening. One reviewer stated: “With its efficiency, reliability, modular design, and quiet operation, it provides everything you need for a high-performance system without compromising on space.” which we believe sums up this PSU perfectly.

For our third pick, the reign of Corsair continues with the HX1000i power supply as our best efficient pick. This PSU has a platinum efficiency rating from Cybernetic and 80 Plus. In our Corsair HX1000i review, we verified its operational efficiency with our test setup and were glad with its performance. 

This is a fully modular ATX power supply unit with dimensions of 180mm L x 150mm W x 86mm H (7.09” x 5.91” x 3.39”). These dimensions mean it needs a spacious casing to be comfortably housed, and it isn’t designed for mid-tower or mini PC cases. 

That said, its full modularity means the cables won't be an issue even if you’re slightly tight on space but can manage to fit it. You can only connect the necessary cables, keep the rest stored away, and bring them out when you need to connect another component. As for what cables come in the package, you should get the following: 

These cables should be enough to connect and power various components, with enough left over for future upgrades. 

It has a 140mm FDB fan, which makes sense since it's a powerful PSU and requires adequate airflow to keep it cool. Cybernetics has rated this PSU as an “A” in noise levels, which means its range is 20-25dB. This noise level is barely noticeable, yet the fan does a good job of keeping the temperature under control. 

The Corsair HX1000i is an outstanding power supply, for a component that might not be at the forefront of your build it brings about so much more than the rest.

Regarding its performance and efficiency, our testing found that it remained at 90% efficiency when idle and peaked at 93.93% when tested against heavy workloads. So, not only does it provide a good overhead for extreme hardware and overclocking for your system, but it also keeps it running optimally and ensures low electricity bills in the long run.

Our findings matched the Cybernetic results, which claim that the HX1000i has an 89.9% average efficiency with 115V and 91.4% efficiency with 230V.

This PSU comes with 2 EPS and 5 PCIe connectors, meaning you should have enough cables to power various PCIe devices. The 12VHPWR connector, in addition to its ATX 3.0 support, should ensure you can effortlessly run modern Nvidia and AMD GPUs. 

The maximum load of its 12+ single-rail connection is 83.3A, which means you should have plenty of headroom to power an overclocked GPU. If the power draw exceeds that, the OCP should trigger a shutdown, saving your components from shorting. 

The HX1000i has a zero RPM mode, which means the fan won’t spin unless necessary. This should reduce the already low noise levels but ensure that the PSU won’t heat up, as the fan will start spinning as soon as load is detected. 

Lastly, the most cool aspect of this PSU is its compatibility with Corsair’s iCUE software. This should enable you to set the fan curve according to the workload and temperature, check the power settings, and more. This is a great addition, particularly for individuals located in hotter regions, as the components require more cooling due to ambient temperature. Setting custom fan curves should help with that. 

Overall, this is one of the best PSUs available, and while it does come at a premium, its performance and efficiency make it worth every penny.  

What users say

According to customer reviews on Amazon, this PSU has amazing performance, efficiency, and build quality. The almost noiseless acoustics of this power supply are a major hit among the reviewers, and one user stated: “I would wholeheartedly endorse this PSU and wouldn't hesitate to purchase it again.” 

For our more budget-conscious readers, we recommend giving the Thermaltake Smart RGB 500W power supply a shot. In our Smart RGB 500W review, it had decent performance fitting for a budget option. 

This is a non-modular PSU, which means its cables are permanently attached to it. In terms of cable management, this means you won’t have the refinement of a fully modular PSU, and you’ll have to tie the unused cables and store them in the PSU compartment. As for the cables, it has the following:

This is 150mm in length, 140mm in width, and 83mm in height (5.9” L x 5.5” W X 3.3” H). These dimensions are seen in most ATX PSUs, which means the Smart RGB 500W can fit in a mid-tower case, but that wouldn’t be possible in a smaller casing. 

It features a 120mm fan with a maximum RPM of 1800. According to Thermaltake, it has intelligent RPM control, meaning it’ll adjust its speed according to the load and temperature. They also claim that it has a noise level of 27.1dB at 100% load. Our testing found that it reached 43.97dB and 43.32dB for the 115V and 230V versions, respectively. According to the Cybernetic noise level standards, this puts this PSU in the standard category. 

The Thermaltake Smart RGB 500W is a perfectly fine choice for a budget build when you want a good value option.

Regarding its efficiency, Thermaltake has rated it 82-86% efficiency at 20%-100% load. We tested its efficiency for the 115V and 230V versions, and it managed 82.838% and 85.490% efficiency, respectively, which makes sense since it has an 80-plus white rating. 

So, it delivers what it promises in terms of efficiency, but the acoustics are far from quiet, and if you want a noiseless build, this PSU wouldn’t be an ideal fit. 

The Smart RGB 500W PSU comes with an RGB lighting button on the back, which you can turn on/off for RGB effects. There are a multitude of effects available, and you should be able to choose the color that matches the aesthetic of your build. 

Regarding protection technologies, it features OVP, OPP, and SCP. These technologies should protect it from undervoltage or a power surge by turning it off immediately when the current exceeds the value set as the limit. The Overvoltage protection is set at the following values:

In addition, it has similar 100,000 MTBF hours but a 5-year warranty. That said, we need to keep in mind that this is a budget pick, and options with better features and warranties also come with a directly proportional price tag.

Overall, this is a solid budget PSU choice. While its fan noise might deter some from opting for it, this should work perfectly fine if you’re operating on limited cash and your setup doesn’t require a heavy PSU. 

What users say

According to Amazon reviews, the Thermaltake Smart RGB 500W PSU is a reliable and inexpensive option that delivers what it says. One reviewer said: “No experience with a warranty claim as I've never had to do that with these,” which tells that they are more than satisfied with their purchase and never experienced any faults.

For our last pick, we see Corsair making a coming back and planning to conclude things with a bang. And for that, we’ve got the RM850x Shift White PSU. 

This is an ATX power supply unit with dimensions of 160mm L x 150mm W x 86mm H (6.2” x 5.9” x 3.3”). This means it's not as small as an SFX PSU but smaller than the HX1000i. So, it should fit snuggly inside a mid- or a full-tower case. 

That said, the Shift series from Corsair brought an interesting design change by moving the cable interface on the side of the PSU. This should allow for easier cable management, combined with its fully modular nature, and enable different installation settings. 

The RM850x Shift White is fully modular, which allows you to add or remove the connecting cables depending on the requirements. For example, if you want to expand your storage by installing an HDD, you can do so by connecting the HDD to the power supply and attaching a SATA cable to the HDD. As for what cables come with the RM850x Shift White, you should get the following:

In addition to the necessary cables, like the ATX power cable, the 4 PCIe cables should allow you to connect multiple PCIe devices, allowing you to customize and upgrade your build further. 

This PSU has an 80-plus efficiency rating of Gold. This generally means that a PSU is 87% efficient at 20% and 100% load and 90% efficient at 50% load. This gives us an idea of how a particular PSU should perform under heavy loads and idle conditions. 

The higher the efficiency, the more electricity is utilized instead of wasted as heat, resulting in lower electricity bills. That said, according to Cybernetic, the RM850x Shift White is 88.672% efficient at 115V and 90.817% efficient at 230V, which puts it in the Cybernetic Gold standard as well. 

Cybernetic gave it an “A” for fan noise, meaning its noise output falls between 20 and 25 dB. According to the RMx SHIFT quick start guide, it should have an output of 20db at 680W and gradually move above the 30dB mark as the load reaches its maximum capacity of 850W. That said, even if you manage to draw out its full potential, 30db shouldn’t be bothersome as it is generally compared to the sound level of a whisper. 

It also features a 140mm fluid dynamic bearing or an FDB fan. These fans are better than rifle-bearing fans and can be mounted in different orientations without compromising the fan spin. Since it is a powerful PSU, the 140mm fan should keep it cool, and, as we discussed, it doesn’t make much sound either. On top of that, it has a zero RPM mode where the fan stops spinning if it doesn’t detect a significant workload. This should also contribute toward the unit consuming less electricity but ensure good cooling as it should start working as soon as the workload is detected. 

This RM850x also has a Mean Time between Failure (MTBF) of 100,000 hours. This means the unit or the internal components can fail once in 11 years. That said, it comes with a 10-year warranty, which is plenty of time. So, if it fails in that time frame, you can claim the warranty to replace or repair it. However, we recommend reading the fine print of the warranty claim as there are some factors that nullify a warranty claim, like water damage in the case of mobile phones and such. 

This power supply unit also has a handful of protection technologies that safeguard its operations. These technologies include the following: 

All of these safety measures ensure the PSU runs optimally, and any low voltage or power surge will shut it off before it damages itself or short-circuits your PC components.

Lastly, it comes with Overvoltage Protection (OVP), Undervoltage Protection (UVP), Short Circuit Protection (SCP), Overtemperature Protection (OTP), and Overpower Protection (OPP). These protection technologies help ensure the PSU's longevity and prevent PC components from frying.

What users say

According to customer reviews on Amazon, this power supply unit is outstandingly efficient and reliable. Its modular and new design allows for easy cable management. Its low-noise fan is well-liked, and even at high loads, it's barely noticeable. One user stated, “I highly recommend the Corsair RM850x to anyone in need of a powerful, efficient, and silent power supply for their PC build. Corsair has once again raised the bar with this outstanding product.”

How to pick the best power supply 

Before you settle on any one power supply, there are a couple of factors that you need to consider. Keeping those in mind should help you narrow down your list of options and select a PSU that has a good performance-to-value ratio and is the perfect fit for you. We’ve listed some of the factors below. 

Power requirements

The first factor you need to consider is your power requirements. For example, if your setup has plenty of fans, RGB components, and an RTX 4090 paired with an i9-13900K, a 500W would be too underpowered, and either your system won’t boot, or it’ll keep crashing. In that case, opting for a 1000W or even a 1200W PSU would be better suited.

On the other hand, if you have a budget rig with more power-efficient components like the Ryzen 5 5600X paired with an RTX 3070 Ti, then a 750W or even 650W PSU should be able to power all of it without disruptions.

So, calculate how much power each component requires and opt for a PSU with a 100W overhead to the total number. For example, if your complete system requires 550W, a 650W PSU would be ideal.  

Form factor 

The next thing you need to consider is how much space your PC case has to accommodate a PSU. Depending on that, you’ll have to get an ATX or an SFX PSU. SFX PSUs are smaller in size and can easily fit into smaller cases. However, if space isn’t an issue, an ATX PSU should serve you well, and they have better thermal design. 

Efficiency

The PSU's efficiency rating determines how much energy is utilized and how much is wasted. For example, there are six standards: 

The higher you go, the more efficient a PSU is, and the less electricity is wasted. This results in lower electricity bills and peace of mind that your system is well protected, which is priceless. 

Modularity 

There are three types of PSUs: modular, semi-modular, and non-modular. The modular PSU is fully customizable in the sense that you can only attach the cable you need and put aside the others. This leads to better cable management and less clutter.

Semi-modular PSUs only have a couple of cables attached, while the rest can be attached if needed. The attached cables generally include the ATX 24-pin, the 8-pin CPU connector, and others. 

Non-modular cables have all the cables permanently attached, meaning that you can’t remove any of them. With these PSUs, the cables that won’t get used are stuffed inside the PSU compartment, which leads to poor cable management and possibly overheating issues since everything is cramped up.  

Is a 1000-watt PSU overkill?

There isn’t a one-size-fits-all answer to this question, and it varies from scenario to scenario. For example, if you’re running an RX 590 with an i7-4770 processor, a 1000-watt PSU is overkill, as a 500 or even 450W PSU could power that setup.However, if you’re running an RTX 4090 with an overclocked i9-13900K, a 1000W power supply should be a good fit, and some might even suggest going for the 1200W category. So, it all depends on your components and whether you’re overclocking them. 

Design

Corsair's HX1000i is a well-built and beefy power supply. It comes well-packed into the box it comes with which also keeps the packaging more eco-friendly for the newer model choice. Reducing the plastic packaging, especially for the cables that come in a box instead. Along with changing the wrap on the PSU which helps with recycling and keeping rubbish down. Although the foam protectors are a bit harder to deal with but kind of a necessity if you want your PSU to survive transport.

Corsair HX1000i is an overall impressive power supply, with the power behind it and a long 10-year warranty making it a desirable long-term solution

With the pack you get a good count of zip ties as well, allowing for some great cable management. That also comes naturally with the fact that the model is fully modular and you only need to install the ones you actually need. Plus there is a lot of range and options to choose from considering it is an ATX 3.0 unit and so you do get native a 12VHPWR cable, giving you the choice of the best graphics cards out there and for many years with the power rating and support on it.

Although it is a 1000W power supply and comes with the latest connector only two standard PCIe cables, although they do double up to two connectors on each which should provide enough for any GPU, along with coming with two EPS connectors for your CPU, you can get a good overclock and power to your entire system effectively. Even though there are some extra ports you can't use up all the SATA and PATA ports with the given cables

For the cooling of the PSU, it features a full 140mm fluid dynamic bearing fan. Along with a zero RPM mode, it does provide a strong cooling selection and performance when it comes to it. It also comes with a USB connection to plug into your motherboard and with an LED to the side showing activity. That connects up to iCUE and you can easily see how your PSU is performing and set profiles to it which makes it easier to see what it's doing and set limits to it for peace of mind and longevity.

Size

The Corsair HX1000i comes in at a standard ATX sizing, but it is a longer choice as well. Since it is extended to 180mm it does take up a bit more space in the bottom, so it's best to make sure you have everything you need for installation and not have to plug it in after. It also means you have to be careful with your PC case choice so you can fit it in so that you don't have any issues, but it certainly is not an SFX pick for smaller builds.

Performance

Plugging the power supply into our test bench we got to see how it does, with the combination of iCUE and HWinfo accessing those sensors we got a bit more information on what the power supply was doing. Alongside that keeping an eye on our power meter to see how much power is needed for it. Our test bench consists of the following components:

The CPU and GPU are the main contributors to the power requirement of your PC. For our combination, the CPU and GPU combine to a minimum of 520W. Along with a recommendation of at least 750W, which the HX1000i can easily cover but also provide with good efficiency. We put that to the test by running Furmark 2 CPU and GPU stress tests and recorded the PSU performance.

for a component that might not be at the forefront of your build it brings about so much more than the rest

In that full load situation, the power draw from the wall was around 706W, showing why the recommendation is for that 750W mark. But during that, the efficiency according the the PSU's own sensors through HWinfo peaked around 93.93% as it rose higher during those intense workloads but wavered around 90% at idle. While the power draw did fluctuate as the graph also shows the fluctuation also dropping to 600W at times. The fan at this time also spun up to 556 RPM, but being a 140mm fan it wasn't at all too noisy and was a strong cooling capacity.

You can also check out Cybenetics testing, for an in-depth look at what earned the Platinum rating for the PSU. As there you also get a split between 115V and 230V, we are on the latter being in the UK. However, their testing shows its average efficiency at 115V getting 89.9% and 5VSB around 78.5% with the average noise output coming to 24.64dB(A). Whilst at 230V it averages 91.4% with the 5VSB coming to 78.4% and the sound staying around 24.63dB(A) for a noise rating of an A, showing just how quiet it is.

GPUs to pair with the HX1000i

At this power rating, there's not much you can't run with the Corsair HX1000i. Even the top-rated graphics card in the RTX 4090 is a top contender for pairing with the PSU as its 450W total graphics power suggests an 850W unit and running it on a high efficiency makes sure your electricity bill is going towards running it effectively. The top AMD GPU can also be a top choice for it with the RX 7900 XTX offering plenty with it for less. So that and the 4090 are both, although the Nvidia card is a bit tougher to find so the RTX 4080 Super is a good alternative as well.

Conclusion

Overall, the Corsair HX1000i is an outstanding power supply, for a component that might not be at the forefront of your build it brings about so much more than the rest. With such a high efficiency and warranty it's a PSU built to last, for 10 years minimum of no worry, but with the build quality, we expect even more from it. Along with providing insight into its workings via iCUE, it's a true enthusiast choice, which is where the drawback is. As the amazing choice sets you back around $260 at full price, although it might save you in bills over the years it might be worth it for those looking to use it for many builds to come, and we would consider it.

Although the best PSU might not be at the forefront of your gaming PC build, it's still an important part. Even on the low end, if you're not wanting to spend all the money on the power it's still key to get a reliable source. That's where Corsair's range might be a top selection for it if it's the Corsair RM1000X Shift we reviewed or the CX range on the other end, we look to see if it's still a worthy pick.

Design

In general, the power supply doesn't sport anything too different from the standard. It comes in as a non-modular model, compared to a semi or full which means you can't replace any of the power cables available to you. This does limit you as to what connectors you have available to utilize and build with. That includes being able to run custom cables if you want some personalization.

as a budget PSU, it keeps things simple to keep the price down, and the power rating does still make it a consideration for stronger builds even if your choices are limited

This also means having to cable manage anything you might not be using, such as PATA or the Molex connectors that aren't seen as much these days. It does make things simpler when building though, as you're not going to miss out on any cables and having to reach inside the PC case to plug one back in.

It also cuts back on some more modern features of power supplies. Such as it not being a PCIe 5 PSU, which is necessarily a bad thing but it has not native 12VHPWR connectors for the best GPUs out there from Nvidia. But it still has the power connectors for it. With a 750W rating, it's still strong enough for a top GPU, you just have to make do with the three PCIe connectors (although two of them are doubled up on the same cable).

For the power cables, you also get just one EPS for your CPU power, so if you have a higher-tier motherboard with two, enabling more power and overclocking means the CX750 is not the right pick for it. However as a budget PSU, it keeps things simple to keep the price down, and the power rating does still make it a consideration for stronger builds even if your choices are limited.

Size

The CX750 is a more standard choice of PSU, comparing SFX and ATX there is a big difference in size and form factor to fit into a small build. However, this PSU is still an ATX form factor, just a bit shorter than standard. The power supply has dimensions of 150mm x 86mm x 140mm which means it's not as long as some other options. This does benefit slightly in managing cables and fitting in the nonmodular choice hidden away whilst being able to still close the side panel.

It does just about fit the fan inside of it, as it features a 140mm rifle-bearing fan inside of it. Which doesn't feature a zero RPM mode but the size and design keep the PSU cool. It should be a useful addition to even those tighter spaces and cases, although it's not an SFX model to utilize for the even smaller ones.

Performance

We don't have a full, suite of performance testing capabilities, but we put it to the test on our testing rig to see the power drawn and supplied to the key components. Our setup consisted of the following components:

The 7950X has a TDP of 170W, and the RTX 3090 has a 350W rating, adding together to require a minimum of 520W. Factoring in the other components and the overhead, the recommendation for the GPU is at least 750W. That means the CX750 is a good enough choice for it and we put it to the test with a full load with Furmark 2 CPU and GPU stress test.

We see once the two are loaded, and we see the GPU temperature rise and CPU flatten at 95°C the power level also stabilizes. The GPU sits around 369W and the CPU peaks at 196W but levels lower to around 190W. The PSU provides that effectively and under that full load our power meter showed the power supply drawing around 736W, coming close to the limit but providing enough for the job. It does use more though with its efficiency as we'll see in the rest of the Corsair PSUs we have tested.

limits your customization but gives you all the cables without having to worry about plugging in the right ones

Under its full load, the fan did ramp up even though there's no hybrid mode it reacted to keep temps down. There wasn't a high sound to it too much. Although in the office it might be a bit harder to compare and without a sound meter and sound room we don't hear any issues. Plus in a build, it's unlikely to be a big contributor, and without noticeable coil whine it is a good choice still.

What GPUs to pair with the Corsair CX750

There are not many graphics cards that can't be powered by the CX750, the 750W covering a good range of options especially as efficiency improves over the generations and you get more performance for the power. In this case, even our RTX 3090 wasn't really hindered by the choice.

What can limit you is the three connectors, the double connector on one cable may be harder to utilize to its full potential. Even still the lower choice PSU is best suited for lower-end build and combining with a lower cost GPU to match. A choice of RTX 4070 Super or RX 7800 XT is the sort of level to match along with a lower model and keep your build costs down. It also leaves some overhead on the PSU and can minimize that efficiency loss by keeping power use down in general.

Warranty and support

As a lower-tier model, the CX750 limits the available warranty on it. It's set to 5 years after purchase so you're unlikely to be using it in many builds to come. But it does provide a good peace of mind for the current setup as it should last. That includes the fan and the good bearing that Corsair utilizes in it and should outlast the 5 years especially as it is constantly running.

Conclusion

All in all, the Corsair CX750 is a strong choice of PSU, in a highly contended range in does offer a good price. But at the cost of efficiency and modularity and the same time, it limits your customization but gives you all the cables without having to worry about plugging in the right ones. A shorter unit, and with limitations it is an overall ok pick to go for when it's about budget, but inefficiency and modularity aren't too much more expensive and at this power level it might be a stronger recommendation.

Design

Primarily the Corsair SF850L offers a smaller size, but being a strong power supply it has a strong offering without cutting out much. As the PSU is just a shrunken-down option it still is mostly the same as the standard ATX options, and unlike the RM1000X Shift we reviewed, the power connectors are on the usual end. It utilizes Type 5 cables, in case you want to swap them out, but provides a good range of cables and connectors by standard.

That includes being ATX 3.0 and PCIe 5 compatible, giving you the 12VHPWR connector out of the box and without faffing around with any adapters that haven't had the best reputation since it's included with RTX 40 series graphics cards. Along with a good range of connectors, the actual sockets are well spaced out, not bunched up right next to each other means it's a lot more accessible and easy to plug in and out the connectors. Although stacked on top, it requires some space to unclip each which might get in the way.

The Corsair SF850L doesn’t drop much even as a small factor choice

Otherwise, you get a simple-looking logo on the side and a model name with standard Corsair branding. On the other, you get the full specs and safety information of the unit and an essential warning about not opening it up. To note there is a hybrid choice, and you don't get control of the fan on board, which is a 120mm fluid dynamic bearing option providing it with a strong cooling choice.

Size

SF850L is an ideal choice for small form factor PCs with its SFX-L design. Measuring 125 x 63.5 x 130mm it does suit those mini builds but even then offers up an adapter if you want to use it in a bigger case, not that we would recommend doing so as it can stand out a bit.

With the micro fit cables and full modularity, it does offer a useful addition to many small builds, including cable management. In that small space, we see the fan take up most of the space on the intake. This should still be adequate for the cooling as the compact internals are likely to reach higher temps with the 850W rating and so might need some work so let's see how it fairs.

Sound and efficiency

Rather more importantly the performance of the PSU is key as well, and the SF850L does well in general to achieve a strong result. Although 80 Plus gives it just the gold standard, Cybenetics tests put it at a Platinum efficiency. At 115V the average efficiency archives 90.577% with the 5VSB efficiency at 83.657%. With the 230V version at an average of 92.33% and 83.020% for the 5VSB rail.

As for the sound of the PSU, it only achieves a Standard+ rating, as it averages 36.09dB(A) for the 115V, and a bit less at 230V with 35.92sB(A). That does leave it on the louder side of choices, but that is to be expected with the work it has to do to keep temps under wraps in such a small unit. Even then it's unlikely to be heard when you're engrossed in heavy tasks and there are other components taking the spotlight.

What GPUs to pair with the PSU

There's not really much you miss out on with this 850W PSU, although if you're going for an SFX PSU, then you're likely in a small build. This means you're going to want to get an ITX GPU or low-profile graphics card that can also actually fit into a narrow space.

You can easily power even the likes of the RTX 4080 Super and RX 7900 XTX, as they are easily powered by the 850W. With only a TBP of 320W and 355W respectively. However, depending on your case and space, it might not be feasible to fit those in with their large cooling solutions, and instead looking down towards an RTX 4070 Super or RX 7800 XT might be more reasonable.

Corsair SF850L is a handy dandy little PSU

Warranty and support

The SF series of Corsair power supplies has a tad bit shorter warranty period than its longest option of 10 years as seen in the longest ranges. But it's still on 7 years of warranty and support for the unit since purchase. Providing you a length period of knowing you are going to be covered and how long it might last you. As it is a strong choice for your next build, no need to spend any more just re-use and that is a key consideration for the long term. Especially with the long-term features on it.

Conclusion

The Corsair SF850L is a handy dandy little PSU. As a small form factor choice, it provides great power and performance with great efficiency at the cost of some sound drawbacks. However, it costs as any standard ATX choice and does not come with any tax for being more unique. Whilst also providing a strong future-proof choice considering the native ATX 3 support available that will give you many years of changes and upgrades.

Design

The Seasonic Focus GX-850 is a rather simple yet refined-looking power supply. Without much standing out but a more elegant combination of black and gold, accents the writing and key areas to focus on. It gives the power supply a nice styling and refined look as it makes the PSU an attractive sight and easy to read before you put it in at least seeing as it's the only time you will see it.

elegant combination of black and gold, accents the writing and key areas to focus on

It also offers full modularity as a great way for cable management and swapping out for custom cables if the standard ones aren't enough for you. They are on the bulkier side of sizing but provide a good range of options, as there are five CPU and PCIe sockets for your build allowing even overclocking alongside the high-powered processors and graphics cards. Along with four peripherals and SATA for all the additions to your rig.

For its cooling solution, it has within it a 120mm fluid dynamic bearing fan, which gives it a strong cooling performance and keeps temperatures under wraps at a good sound level. The latest model also features the PCIe 5 standard allowing you to use the latest gen without an adapter and getting the 16-pin connector by default reduces the risk of any problems.

Size

The Seasonic Focus GX-850 isn't different than a standard ATX PSU, it's not an SFX model and comes in at a size of 140 x 150 x 86 mm. That makes it an easy addition to any PC case if it's not a small form factor. Plus with the interchangeable connectors, you don't have to manage as many cables as you don't need, but a standard case basement will be plenty of space to fit it all in.

Sound and efficiency

If you're about the sound and efficiency then the Seasonic is a strong contender for both with the GX series. It's not the top-spec but it comes in at an average rate so you don't have to spend a tremendous amount on it. The power supply is rated Gold for efficiency by 80 Plus and Cybenetics, giving it a strong average level overall.

At 115V, it gets an 88.845% across-the-board efficiency, along with the 5VSB average reaching 80.848%. Whilst at 230V that jumps up to 90.962% and the 5VSB average is up to 79.360%. That provides you with a strong conversion rate of what electricity you're paying for compared to what you're using. The sound of the component reaches 30.73 dB(A) and 30.82 dB(A) respectively keeping it relatively low and well adjusted to ambient, as Cybenetics testing shows with the rating it achieves.

If you're about the sound and efficiency then the Seasonic is a strong contender for both with the GX series

What GPUs to pair with the Seasonic GX-850

As an 850W power supply, there's not much you can't run with this choice. As the graphics card is the dominant factor in how much power you need to supply to your system. But even the top-end hardware available now doesn't need much more. That's why matching it up with the best 4080 Super, or RX 7900 XTX is a good capability. Those have a typical board power of 320W and 355W respectively, which means the recommendation is 750/800W PSU, which makes the Seasonic a perfect choice. Especially with a decent mix of value to efficiency and not wanting to splash higher for it.

Warranty and support

Seasonic is a well-known brand for power supplies and they keep you covered well. That is also the case for the GX-850 as you will have 10-year support for it. That gives you some peace of mind for using the PSU, and not just for one system, as with an 850W power it will be a strong choice for any future builds. This will give you a lot more value for anything in the future as you don't have to rebuy one of the key components.

Conclusion

In general, the Seasonic GX-850 is a strong universal power supply, and as gold standards are the norm, the Seasonic sits strongly in that rating. Without a great deal of noise either, and running good temps doing so means you can have a great overall experience using it. Plus with the 850W rating, it is a great general choice as the Focus looks to a wider audience and a whole lotta years that you can keep using it.

Design

For a general design, the Thermaltake Smart RGB is a bit limited in what it offers, which is kind of expected for the budget option that it is. First of all the big drawback is the non-modularity of the power supply, compared to fully and semi-modular it does make it a lot less customizable and flexible to what you do with it. Stuck with the ketchup and mustard of the old, it does bring some nostalgia, but limits your ability to change them out and how much you have plugged in. Although at 500W you're unlikely to get much more, length can be a big issue depending on your PC case and routing.

Stuck with the ketchup and mustard of the old, it does bring some nostalgia, but limits your ability to change them out and how much you have plugged in

Although that is part of the low budget, not providing much customization or changes but keeping things simple. But that is differentiated by the color aspect, included. The Thermaltake PSU puts in a 120mm RGB fan for the cooling solution, which is easily switched in mode via a button on the back like the power switch. Allowing you to switch through 15 modes that are remembered in the built-in memory for easier use between your sessions.

To also keep costs down the power supply limits itself to a minimum spec of hardware inside. You won't be seeing the famed Japanese capacitors inside but something more minimal and low-quality electrolytic caps. Although these may not be as common and popular they shouldn't cause any harm as we see with the warranty on offer. Although the performance and protections aren't as effective as they could be.

Size

As with any other ATX power supply, it is a full-size option, measuring 150 x 140 x 85 mm which makes it a standard choice for a range of builds. That does not make it a suitable SFX PSU and is limited to those sizes. Whilst the non-modularity puts all the cables to one side, and without replugging options, makes it a lot easier to handle. But it does bulk up the cable management required and hide away whatever you're not using that needs some space in the basement of your case.

Sound and efficiency

Looking at the testing done on the power supply, we look at what the Cybenetics standards testing showed about it. This does show why it's rated so low, as the 80+ White rating and Bronze awards from the testing do show it is not an ideal choice for those looking to get the most value for money in the long term, as the input power conversion to useful electricity is not as good as it could be.

The Smart RGB 115V version averaged an efficiency of 82.838%, which doesn't seem too bad, but the 10W and 5VSB efficiency drops further making it a hard choice when under high loads. That is the same for the 230V, although the average reaches 85.490% it also does not fare well in the specific uses. The fan is not quiet either, reaching 43.97 and 43.32 dB(A) respectively, although not a sound to hear throughout your build it still is higher than others and not an ideal choice for a quiet build.

What GPUs to pair with the Thermaltake Smart RGB

For the low 500W PSU you don't want to overload it with high-powered and best graphics cards. Instead, the low-end selection is what can be managed, as it pairs up with the entry-level choices even the new-gen option. The likes of the RTX 4060 and RX 7600 are both good choices to match the power supply's capability.

Most of your system's power is dictated by your GPU, as their TDP or power consumption is the greatest out of the entire PC build. With a 115W and 165W typical board power respectively for the cards, they only require a 500W PSU and go well with the Thermaltake choice as it also covers the one or two power connectors they might require. There is even potential to jump up to an RTX 4060 Ti if you need a bit more from your graphics power.

perfectly fine choice for a budget build when you want a good value option

Warranty and support

The lower choice Thermaltake Smart RGB 500W has a more limited support system than compared to a higher choice power supply, such as the RM1000X Shift we also reviewed. It comes with about half the life support with only 5 years from when you purchase the power supply from a retailer, and it might not be a strong choice for multiple systems. It might be a good pick for a budget pick now but might not be strong enough for the next build in years to come.

Conclusion

Overall, the Thermaltake Smart RGB 500W is a perfectly fine choice for a budget build when you want a good value option. Lacking the looks and customizability, you want to make sure it suits your needs with the limited-length cables and their red and yellow looks. But when efficiency doesn't matter too much either and instead you want better components, it is a perfectly strong choice of power supply.

Ion+ 680P design

As far as PSU designs go, the Fractal Design Ion+ 680P keeps things simple. No lights or mixing things up it keeps to the basics to focus on the internals. With a two-piece design with a slight change in tone between the top and bottom, it's sleek and to the point considering you don't see it most of the time, it's not exactly a necessity.

As for the connector side, it's quite a standard setup, although fairly limited in combination. However, an 860W PSU might not need all too much in total. But the supply combines the ATX 12V and PCIe into the same range of connectors, which gives you only that much for both CPU and GPU combined. That will be plenty for most standard builds as the Fractal PSU comes with two 4+4 pins and six 6+2 pins.

Fractal Design Ion+ 680P source: BGFG

You also get plenty of SATA and peripheral options with four individual connection ports. On the side facing into your PC case as well, you can find the "zero RPM mode" switch, giving you flexibility to the noise levels, although you may not require much attention anyway when it comes to performance.

From the main power side, there's not much but the off-on switch and plenty of ventilation to exhaust out the back of your system. That is also where the incredible cooling comes into play. Featuring a huge 140mm fluid dynamic bearing fan, that comes with little impediment to keep temps down for a top performance choice.

Ion+ 680P size

There's not much too different in the sizing of the Ion+ 680P as it offers up a standard ATX form factor. Unlike the RM1000X Shift, it doesn't need any considerations when building it into your case. But it's also not a small form factor choice, as you compare the ATX vs SFF standard it's not the ideal pick for something small.

With dimensions of 150 x 150 x 86mm, it is a more standard fit and a lot more compatible with a wide range of choices making it an easy fit. But beware of the cables as usual, be sure to fit all the modular cables you need before having to reach into the basement and blindly figure things out.

Sound and efficiency of the Ion+ 860P

The sound and efficiency are where the Ion+ 86-P prospers, making it a top choice for both quiet and efficient operation. Especially with the newer standard from Cybenetics rewarding it with an A+ and Platinum for those functions respectively. That makes it both basically silent in operation as well as ensuring most of the electricity you pay for actually is used for running your PC.

That makes the Ion+ 860P a strong power supply for efficiency with basically no noise.

In terms of the Cybenetics testing done on the PSU, we can see in detail what it does to gain that award. There we see that at 115V it averaged an efficiency of 89.952% with the 5VSB efficiency lower at 76.311%. Whilst the average noise output was only 18.05 dB(A). Whilst at 230V that improves even more, as the average efficiency sits at 91.727% and 5VSB goes to 76.109%, while the noise averages up to 17.99 dB(A). That makes the Ion+ 860P a strong power supply for efficiency with basically no noise.

What GPUs to pair with the Fractal power supply

As an 860W power supply, it's the less conventional wattage compared to the 50W increments you see others utilize. Even still that makes it a rather powerful choice for anything you might want to pair with it. Considering even the top-end graphics cards, which are the ones dictating your power needs, only ask for 850W this PSU can handle anything really.

In that case, we'd suggest the AMD RX 7900 XTX or even RTX 4080 Super to go with the Ion+ 860P. Giving it great efficiency and performance to keep your system nice and quiet. They have a TDP of 355W and 320W and suggest an 800W and 700W PSU respectively. So you can easily achieve it with this power supply and have a good run for years to come.

Warranty and support

Fractal Design offers up a strong warranty for its power supply as you'd hope for. With the part integral to the safety of your entire system you do want to make sure you can trust it and have help if needed. In that case, the Ion+ 680P has a 10-year warranty giving you reassurance for many years from the first time you build with it. Allowing you to get many systems powered with it and get great value for your money.

high power rating and top-of-the-line efficiency, it makes for a universally great power source

Conclusion

The Fractal Design Ion+860P, in general, is a strong choice for a power supply. With a high power rating and top-of-the-line efficiency, it makes for a universally great power source. Especially when it comes to a long-term commitment so you can also enjoy an efficient use of power for your money. However, at this point, there is a second-generation choice that you can enjoy with minor improvements in considering what new-generation graphics might need.

Is the Fractal Design Ion+ 680P worth it?

Today it's not going to be worth getting considering there is a 2nd generation choice you can get hold of. But also if you are after an ATX 3.0 PSU with native support for the latest choice of hardware that can save you plenty of distress it's not the choice either. But for efficiency and low noise, it is a top choice option.

RM1000X Shift design

Of course, the first thing you notice on this power supply is the shifted power connector locations. Instead of sitting on the opposite end of your AC cable, the connectors are now on the side of your side panel. No more reaching into the base of your PC case and fumbling around to try and unplug or plug in that cable you forgot. This PSU makes it a lot simpler where you can now see the cables and access them more easily.

Overall the RM1000X Shift is an excellent choice of power supply for your current or any future builds. With such a high wattage it will power even the top end of hardware. But it also does so with great efficiency and without much noise on top.

But this is very much case-dependent, if you already had easy access it might not be too big of a difference. But it does affect most standard choice cases and makes life just that bit simpler. As long as the case is compatible, the sizing and connections are different than the standard as we'll see below.

Corsair RM1000X Shift, source: BGFG

Being a 1000W PSU there is plenty of power behind it but also a lot of cables included. There is a total of seven PCIe connectors for all your GPU or add-in card needs. Plus it includes the 16-pin connector as a native PCIe 5 PSU, making it a lot easier to use on your next best GPU particularly Nvidia ones that opt for the new standard.

One drawback of the original cables included with the power supply is the short distance between the peripheral connectors. So if you're looking to connect up further away components it might be a bit more difficult. But being a fully modular PSU makes it a lot simpler to swap out for custom cables, but do make sure they are compatible with the pin out of the power supply.

RM1000X Shift size

The RM1000X Shift is a standard ATX PSU but with a bit of extra length added on. As it extends to 180mm, less of a cube than most lower power supplies but should still mostly fit any standard cases. Especially considering there are no power cables at the front to interfere with anything in front of it.

But there is also a consideration for the PC case compatibility. With the connectors next to the side panel, now you have to make sure you have enough room for your connectors. For a good clearance amount, it is suggested you have a case 210mm (8.3") wide in total. So those cases that we struggle to close with our rat's nest cables won't quite make the cut. Or it might be easier with the modularity and ease of access to the power supply.

Corsair RM1000X Shift, source: BGFG

Sound and efficiency

Corsair has put the power supply through its paces. The RM1000X Shift is both rated by 80 Plus and Cybenetics to a Gold standard, whilst the latter also gives it an A sound rating. The Cybenetics results also provide insight into how the PSU works. It runs at a temperature range of 30-32°C (86-89.6°F) and keeps incredibly quietly doing so.

As the testing shows, at 115V the average efficiency was 88.494% with the average 5VSB efficiency at 76.997%. Whilst the fan keeping the temps down only produces an average noise output of 23.62dB(A). Whilst at 230V the average efficiency is up at 90.176% as the 5VSB is up at 78.295% and doing so with slightly less noise at 23.59dB(A).

What GPUs do we recommend for the Corsair PSU?

As a 1000W PSU, there are no modern GPUs the RM1000X Shift can't handle. Even the top-end Nvidia or AMD GPUs don't need anything more. That means you can easily pair it up with the best RTX 4090, RTX 4080 Super, or RX 7900 XTX quite easily.

It's especially useful for the top choice Nvidia graphics cards considering the 12VHPWR connector that comes with the unit. That means it's a lot cleaner without the use of any adapters that might not look too nice out front or cause any issues that the cable was known for before.

Warranty and support

The great thing about the Corsair RM1000X Shift is that it comes with a ten-year warranty. It gives you great peace of mind that you can get it fixed so many years down the line. Considering it is a 1000W PSU it means it's a future-proof choice for any of your future builds, saving you a decision and purchase down the line. It also comes with a great protection system for good transient response and properly set overcurrent and overpower protection. That means you shouldn't be getting any problems with your power but even then you can get support if you do have any issues.

Overall the RM1000X Shift is an excellent choice of power supply for your current or any future builds.

Conclusion

Overall the RM1000X Shift is an excellent choice of power supply for your current or any future builds. With such a high wattage it will power even the top end of hardware. But it also does so with great efficiency and without much noise on top. Its main difference and innovation is the side connectors making it a strong choice for building and managing your cabling. As long as you are willing to pay the extra $30 or so for the privilege.

Is the Corsair RM1000X Shift worth it?

When you need all the power for a good safety margin, along with some strong efficiency, and minimal noise then the RM1000X is a worthy purchase. As long as you take advantage of the side connectors as well, since the markup over the standard choice can be pretty hefty. It brings with it a great design and build quality that does cost a bit more than most but should last you plenty of builds and years.

When it comes to building or upgrading a PC, one of the crucial decisions lies in selecting the right power supply unit. Now, PSUs come in different shapes and sizes, and you need to choose the one that is suitable for your build. Many people, especially beginners, get confused between SFX and ATX PSUs, but the difference between the two isn't that much.

Well, we have tested both types and have enough knowledge to let you know what differentiates the two. So, without any further ado, let's dive in!

SFX vs ATX PSU - what's the difference?

Let's take a look at some major differences between SFX and ATX PSUs.

Size

The biggest difference between SFX and ATX PSUs is the size. ATX PSUs are larger in size and have been the standard form factor for PCs for many years. A standard ATX PSU typically measures 150mm in width, 86mm in height, and 140mm in depth.

On the other hand, SFX PSUs are smaller in size and are hence compact. These typically measure 100mm in width, 63.5mm in height, and 125mm in depth.

Usually, full-tower or mid-tower cases are designed to accommodate both SFX and ATX power supplies. However, compact, SFF, and mini-ITX cases are meant for only SFX PSUs due to their small size. Therefore, keep the size of your case in mind before getting a PSU.

Cooling capabilities

Generally, ATX power supplies tend to have better cooling capabilities than SFX power supplies. This is primarily because ATX PSUs are larger and can accommodate larger fans and heatsinks, which allows for more effective heat dissipation. On top of that, cases that can accommodate ATX PSUs typically have more room for airflow and ventilation, something that further aids in cooling the PSU.

SFX power supplies, on the other hand, are smaller and have less space for cooling components. While the latest SFX PSUs offer improved cooling, they may still be prone to heating up more quickly under heavy loads compared to their ATX counterparts.

Portability

SFX power supplies are small in size, so they weigh less than ATX PSUs. This is why they are preferred for portable PC builds, as they don't significantly increase the overall weight of the PC, thus allowing you to carry it easily wherever you go. On top of that, if you ever plan to upgrade to a bigger PC case in the future, you can easily fit your SFX PSU inside it.

SFX vs ATX PSU - which one should you choose?

Now, coming down to the main question, which one should you choose? Well, it all depends on your requirements.

If you have a large PC case, then it would be better to opt for an ATX PSU. This is because they usually have better cooling capabilities, and your case can accommodate them as well. As Intel claims, too much heat can cause your overall system to slow down, and an ATX PSU with a large fan can definitely help out with this. On the other hand, if you're looking for a compact PSU that is small in size and doesn't weigh a lot, then you'd want to opt for an SFX PSU. In case you want to explore some options, you can check out our top picks for the best SFX power supplies.

Should the PSU fan spin when turned on?

Usually, PSU fans spin only when needed. When you're engaged in a task that isn't drawing much power, the fans won't spin as there won't be enough heat generated.

How often should PSU be replaced?

A high-quality PSU can last between five and ten years. However, you should replace your PSU as soon as it starts performing poorly, as a faulty power supply can end up damaging other components.

Producing CPUs with a TDP that consumes a low wattage has become a standard for AMD; the Ryzen 7 5700X3D has an efficient TDP that only consumes 105W. With this in mind, we’ve decided to compile a list of the best PSUs for the Ryzen 7 7500X3D. We will consider this CPU as a gaming unit that will normally be matched with a mid-range and above GPU. So, PSU wattage will vary in accordance with which GPU it’s paired with.

As a rule of thumb, we’ll include PSU above 650W up until 1000W to consider every type of user. Whether you’re a budget user who will pair it with an RTX 3060 or 4060 Ti or a power user who will push the CPU to its limits, pairing it with an RX 7800 XT or an RTX 4070 Ti Super.

If you’re keen to find out more about this impressive CPU, check out our other coverage on this product. Namely, our picks for the best CPU cooler and best motherboard for the Ryzen 7 5700X3D.

How we selected the best PSU for Ryzen 7 5700X3D

We consider the versatility of the PSU in terms of connectivity options, accommodating different types of GPUs and other peripherals. This approach ensures we recommend PSUs that meet the power requirements and offer reliability, efficiency, and value for money.

In addition to technical prowess, we look at the manufacturer’s reputation and the warranty offered. Buying a PSU from a reputable brand with a comprehensive warranty offers peace of mind. Knowing that a product is backed by reliable customer support and service is important.

Best PSU for Ryzen7 5700X3D

If you want the best PSU for your Ryzen 7 5700X3D build, then you should check out the EVGA 850 GT.

To begin with, the PSU offers a robust 850W capacity, which makes it suitable for power-hungry builds. With this, you get significant headroom for overclocking, future upgrades to high-end GPUs like the RTX 40-series or RX 7900 XTX, and high-end multi-core CPUs.

Further, the PSU has an 80 Plus Gold certification, which means it aims to minimize wasted energy and reduce heat generation. In the long run, it will save you money on your electricity bill and also keep your system cool.

Much like most of the new PSUs out there, the EVGA 850 GT has a standard ATX connector for powering the motherboard and separate PCIe connectors for graphics cards. This, combined with the 850W capacity, ensures that your components get stable power through both these connections.

The Auto Eco Mode further enhances quietness by adjusting fan speed based on system load.

On the inside, the EVGA PSU comes with a fluid dynamic bearing (FDB) fan, which is known for its quiet operation and efficient cooling performance. The Auto Eco Mode further enhances quietness by adjusting fan speed based on system load.

Another thing worth noting is that even though this PSU has an 850W capacity, its build is quite compact. It has a compact 150mm size, making it compatible with a wider range of cases. 

Speaking of aesthetics, the EVGA 850 GT sports a fully modular design. To put it simply, the PSU comes with detachable cables, so you can connect only the necessary ones and simplify your cable management.

What users say

On Amazon, the EVGA 850 GT has a rating of 4.7 stars, and it has been reviewed by over 3,800 people. Most users were happy with the quality, performance, and cooling of the PSU. One of the reviews read - “Build quality is great and I don't even hear the fan over other fans for the GPU or CPU.” Only a few people thought that the cables were too thick. 

Best budget PSU for Ryzen 7 5700X3D

If you want a no-nonsense, budget Power Supply for your Ryzen 7 5700X3D build, then we think that the Corsair RM750x is a good pick. 

As the PSU’s name suggests, it comes with a 750W capacity, which should make it a comfortable fit for most builds (unless you have a massive power-hungry build). Plus, you will have plenty of headroom for upgrading your system, so this PSU should futureproof your build. 

Further, much like some other PSUs on this list, the Corsair RM750x also comes with an 80 Plus Gold certification. This means the PSU will function efficiently and lower your electricity bills. 

To keep the system cool, the PSU comes with a magnetic levitation fan, which promises to deliver better durability and quieter operation.

To keep the system cool, the PSU comes with a magnetic levitation fan, which promises to deliver better durability and quieter operation compared to traditional bearings. It also has a Zero RPM Fan Mode, which completely stops the fan at low loads.

As far as aesthetics go, the Corsair RM750x has a fully modular design, which means cable clutter will not be an issue for you. Another point to be noted here is that the PSU comes in two colors - black and white. In this guide, we have included the white model, which is suitable for white or pastel-themed setups. 

What users say

On Amazon, the CORSAIR 750W 80 Plus Gold has a 4.8-star rating, and more than 1,700 people have reviewed it. Most reviews mentioned that they liked the appearance of the PSU. Reviewers were pleased with the build quality and performance. "For the value, this is really great. Comes with almost every cable you’ll need. Not loud. Super easy to install.," one of the reviewers said. However, a few people had issues with turning the PSU on.

Best premium PSU for Ryzen 7 5700X3D

If you are looking for a premium PSU for your Ryzen 7 5700X3D build, then you should check out the Thermaltake Toughpower PF3 850W.

To start with, the PSU offers a good 850W capacity, which makes it suitable for mid-range, high-end, and even gaming builds. So, you shouldn’t have a problem with the power supply for a 5700X3D build.

Perhaps, the highlight of this PSU is the fact that it has an 80 Plus Platinum certification, which means you get top-tier efficiency, low energy wastage, and lower heat generation. Plus, it also keeps your system cool, which should prolong its life. 

Perhaps, the highlight of this PSU is the fact that it has an 80 Plus Platinum certification, which means you get top-tier efficiency, low energy wastage, and lower heat generation.

Further, the Toughpower PF3 adheres to the latest ATX 3.0 standard, which should make it easy to integrate with modern motherboards. Additionally, it features a native PCIe 5.0 12VHPWR connector, which can potentially eliminate the need for adapters, especially if you use it with next-gen GPUs.

As far as design is concerned, the PSU comes with a fully modular design, which means you don’t have to worry about cable clutter inside your case. All you have to do is plug in the cables that you need and fit the PSU in your case. 

To keep the system running without getting heated up, the PSU sports a 120mm fluid dynamic bearing fan, which promises silent operation. Further, you also get a Smart Zero Fan feature, which automatically adjusts the fan speed depending on the load. 

What users say

The Thermaltake Toughpower PF3 has a rating of 4.6 stars on Amazon, and it has been reviewed by over 2,000 people. Most of the reviews said the PSU delivered great performance, produced almost no noise, and had robust build quality. "This power supply unit (PSU) has proven to be a robust and well-engineered component, providing stable power delivery to meet the demands of my high-performance gaming system," said one of the reviews. A few users had issues with the connecting their cables.

Best 1000W PSU for Ryzen 7 5700X3D

If you want a PSU with high wattage (like 1000W) for your Ryzen 7 5700X3D, then you can check out the ASUS ROG Strix 1000W Gold PSU. 

Heading straight to the technical details, the Asus PSU offers a whopping 1000W capacity, which exceeds the demands of Ryzen 7 5700X3D. So, if you have a power-hungry system or you need a lot of headroom for future upgrades, this is a good PSU for that. 

Further, much like the other Power Units on the list, this PSU also comes with an 80 Plus Gold certification. While it is not as efficient as a Platinum certification, it still helps you reduce power consumption and save money on electricity bills.

To start with, ROG heatsinks help lower temperature even under immense load. Then, the PSU has a 135mm axial fan that promises less heat and silent operation.

The real highlight of this PSU is the cooling system. To start with, ROG heatsinks help lower temperature even under immense load. Then, the PSU has a 135mm axial fan that promises less heat and silent operation. To add to this, the ROG Strix PSU comes with a 0dB Technology that stops the fan when the load is lower than 40%. 

Coming to aesthetics, the PSU sports a fully modular design with 24-pin, 6+2-pin PCI-e, and 8-pin CPU cables that have embedded capacitors to reduce voltage ripple. Plus, you also get a CableMod coupon that will help you customize the colors to match your setup.

What users say

The ASUS ROG Strix 1000W Gold PSU has 4.7 stars on Amazon, and over 3,300 people have reviewed it. Most reviewers were satisfied with the performance, and they mentioned that it looked great. "This power supply is so good I bought another one for my other rig and one for a gift for my brother for his rig," one of the reviewers said. Users also mentioned that the cooling was effective, and the PSU is silent. A few people thought that the price was too high.

Considerations for the best PSU for Ryzen 7 5700X3D

Here are a few things that you should look at while buying a PSU for Ryzen 7 5700X3D -

Wattage

The Ryzen 7 5700X3D, with its modest 105W TDP, is quite efficient, but your choice of GPU will significantly impact the total power draw. For a balanced system, pairing it with a mid-range GPU like an RTX 3060 or 4060 Ti would mean a PSU in the 650W to 750W range would be more than adequate.

However, if you’re eyeing high-end GPUs like an RX 7800 XT or RTX 4070 Ti Super, aiming for a PSU in the 850W to 1000W range is advisable to ensure ample power delivery and future-proofing.

Cooling

If you are going for a high-wattage PSU for your power-hungry system, then having an efficient cooling system is a must. Most PSUs have air cooling systems with a fan. Some also offer advanced features like noiseless fans or smart fans that automatically turn on when the PSU is under load. Meanwhile, some high-end PSUs offer

Efficiency

Most PSUs come with a rating like '80 Plus Gold' or '80 Plus Bronze', which indicates that the PSU can convert AC power to DC power for your components. It tells you that the PSU is efficient, will consume less power, and will keep your system cool while prolonging its life. The higher the rating, the higher the efficiency - with Platinum being the highest rating.

How much power does the Ryzen 7 5700X3D use?

The Ryzen 7 5700X3D has a Thermal Design Power (TDP) of 105 watts, indicating its typical power consumption under maximum load. However, the total power requirement for your system will vary based on other components, particularly the GPU and other peripherals.

Now, right off the bat, for RX 7600 XT, you shouldn’t need a very high-end, super-powerful PSU. In fact, AMD recommends a 600W PSU for the GPU. If you want a little more headroom for your system, you can consider getting a 750W PSU. You can then use your remaining budget on other parts of your gaming experience. 

With that said, we have decided to cover a broad spectrum of PSU types for all different needs, such as budget, high-end, and gaming. Let’s look at the Best PSUs for the RX 7600 XT.

How we selected the best PSU for RX 7600 XT

For this guide, our PC experts have looked at several PSUs that can work well with the RX 7600 XT. Then, we compared those PSUs side-by-side and picked the ones we thought were the best.

Additionally, we evaluate the PSU’s features, such as modular cable design, cooling mechanisms, noise levels, and overall durability. User-friendly features like modular cables for better cable management and robust protection mechanisms against power irregularities are also crucial factors.

For more RX 7600 XT content, be sure to check out the best case for the RT 7600 XT  and how the product compares to the RX 6700 XT

If you want the best no-nonsense PSU for your RX 7600 XT, then we think that the MSI MAG A750GL 750W PSU is a good choice.

To start with, the MPG A750GF comes with a 750W capacity, which comfortably exceeds the recommended minimum of 600W for the RX 7600 XT. The extra headroom provides breathing room for overclocking or the addition of power-hungry components (like an upgraded CPU). On that note, the PSU has the latest ATX 3.0 standard and is PCIE 5 ready, which further improves the scope for future-proofing. 

The MAG A750GL comes with a fully modular design, which simplifies cable management.

Coming to the design, the MAG A750GL comes with a fully modular design, which simplifies cable management. You will only have to use the cables that are necessary, which reduces cable clutter in the case. 

Further, the PSU comes with an 80 Plus Gold certification, which means you can expect efficient power usage and less heat. In other words, you should get a reduced electricity bill and keep your system cool. 

In case your PSU comes under heavy workloads, the MAG A750GL employs a 120mm fluid dynamic bearing (FDB) fan for quieter operation.

What users say 

On Amazon, the MSI MAG A750GL 750W PSU has an average rating of 4.6 stars, and it has been rated by over 1,700 users. Most reviewers were happy with the performance, quality and appearance of the PSU. A review reads, “Not really much to say, does its job, does it well.” However, a few reviewers have mentioned that the cables were stiff.

If you don’t want to spend too much money on a PSU but still get the job done well, then we think that the Redragon PSU013  is a good option. 

To start with, the PSU offers 650 Watts, which meets the recommended requirements for the 7600 XT. Now, this means you should be able to use the AMD GPU smoothly. However, the PSU gives you very little headroom for upgrades. 

The PSU comes with an 80 Plus Gold certification, which should translate into decent efficiency compared to the non-certified PSUs.

The Redragon PSU013 comes with a 0 RPM fan, which activates only when the temperature crosses 60°C.

Unlike many other budget PSUs, the Redragon one comes with a fully modular design. This means you can connect only the cables that are required and detach the rest. If you want easier cable management and care about aesthetics, then you’d want to invest in a fully modular PSU. 

Coming to the cooling solutions, the Redragon PSU013 comes with a 0 RPM fan, which activates only when the temperature crosses 60 degree celsius. Plus, this fan has RGB lights - you get 9 modes and 26 colors to pair with your case and setup. 

It is worth noting that the PSU has a compact 160mm size, which makes it suitable for smaller builds or cases where space is limited. 

What users say 

On Amazon, the Redragon PSU013 has been rated by over 850 people, and it has a rating of 4.5 stars. Most users were happy with the product’s performance, quality, and appearance. A reviewer summed it up as - “Battery has been 100% in performance and aesthetics. Reddragon make a darn good product!!” While some people had no issues with noise, a few users mentioned that the PSU got noisy under heavy workloads. 

If you want a PSU with high wattage for your 7600 XT, then you should check out the Thermaltake Toughpower GF1 850W unit. Here, we will be talking about the 2024 model that comes with a fully modular design. 

As the name suggests, the Thermaltake PSU offers an 850W capacity, which is more than what the 7600 XT needs to function. This means you get a lot of room to accommodate power-hungry components like GPU and also gives you space for future upgrades.

The Thermaltake GF1 comes with a 140mm fluid bearing fan that promises “ultra quiet” operation.

As mentioned earlier, the 2024 version of the Thermaltake Toughpower GF1 comes with a fully modular design, which means you don’t have to worry about cable management. All you have to do is install the PSU and use only the necessary cables. This allows for better aesthetics and more room for air to pass through. 

Coming to its efficiency, the Thermaltake PSU has an 80 Plus Gold certification, which means the PSU can minimize wasted energy and heat generation. It might not be as efficient as a platinum-certified PSU, but we think it offers a good balance between performance and cost.

As far as cooling is concerned, the GF1 comes with a 140mm fluid bearing fan that promises “ultra quiet” operation. With this, you should be able to maintain a cool system.

What users say 

On Amazon, the Thermaltake Toughpower GF1 has a 4.6-star rating, and over 2,000 users have reviewed it. Most reviewers were satisfied with the performance and silent operation, and they were happy with the value that the PSU offered. One of the reviews said, “It is solid, quiet, easy-breezy to install, and worked like a charm for my budget gaming build.” While the installation and connectivity were easy for most users, some mentioned that it came with a lot of cables and that the cable colors were ugly.

If you want a premium PSU with high performance efficiency, then we think the Seasonic FOCUS Plus Platinum 750W is a good option. 

To begin with, the Seasonic PSU offers a 750W capacity, which is higher than what is recommended for the 7600 XT. This means, you get plenty of headroom for other power-hungry components in your system. Further, it will also allow you to get next-gen GPUs and CPUs without having to worry about power supply. 

Further, the PSU comes with an 80 Plus Platinum certification, which is the highest level of efficiency for a PSU. This means you can expect better efficiency than Gold-certified PSUs. Overall, this will reduce your electricity bill, improve thermal management, and potentially increase the PSU’s life span.

This Seasonic PSU comes with an 80 Plus Platinum certification, which is the highest level of efficiency for a Power Supply Unit.

When it comes to cooling, the PSU comes with a 120mm fluid dynamic bearing (FDB) fan, which promises near-silent operation. Plus, you also get a fan stop mode, which completely disables the fan at low loads.

As far as design is concerned, the Seasonic PSU sports a fully-modular design - so all the cables can be detached, and you can only plug in the ones that you need. This drastically simplifies cable management, maximizes airflow within your case, and creates an aesthetically pleasing setup.

Overall, the Seasonic FOCUS Plus Platinum 750W PSU is a good option for people who want top-tier performance and futureproofing for their RX 7600 XT builds.

What users say 

On Amazon, the Seasonic FOCUS PX-750 PSU has a rating of 4.7 stars and it has been rated by over 600 people. Most reviewers were extremely happy with the purchase and spoke positively about this PSU. A review says - “I'll never buy another brand's PSU again. Silent operation + Top Rating on PSU Cultist List.” A few reviews mentioned that the cables were a bit too thick and stiff. 

Considerations for the best PSU for 7600 XT

Choosing a power supply (PSU) for your PC might seem daunting, but understanding key aspects simplifies the process. Here's a breakdown of crucial factors to consider when pairing a PSU with your RX 7600 XT.

Wattage

Wattage denotes the PSU's maximum power delivery. As mentioned, AMD recommends a minimum 600W PSU for the RX 7600 XT. However, consider future upgrades. High-end graphics cards like the RTX 40-series or RX 7900 XTX demand significantly more power, necessitating a higher wattage PSU (ideally 850W or above) for optimal performance.

Efficiency

The 80 Plus certification denotes a PSU's efficiency - its ability to convert AC power to DC power for your components. While a Bronze-rated PSU might suffice for budget builds, aiming for Gold-rated or higher is recommended for the RX 7600 XT. This translates to lower operating temperatures within your case due to reduced heat generation from the PSU itself, along with lower energy consumption for cost savings in the long run. If you want to go more premium, you can check out some of the best high-end PSUs.

Design

Modular PSUs offer a significant advantage in cable management. Non-modular PSUs have fixed cables that can block airflow, and they also make building and maintaining your system a bit harder. Semi-modular units have detachable peripheral cables, allowing you to connect only the essential ones for your build.

Fully-modular PSUs are the pinnacle of cable management. All cables are detachable, enabling a clean and organized interior. This not only improves aesthetics but also enhances airflow within the case, potentially contributing to lower component temperatures. While fully modular PSUs typically carry a premium price tag, the benefits for airflow and ease of maintenance are substantial, especially for performance-oriented builds.

Cooling

When selecting a PSU, consider its cooling solution. Higher wattage PSUs often utilize larger fans to dissipate heat effectively. Look for PSUs with temperature-controlled fan profiles that adjust fan speed based on the PSU's load, ensuring quiet operation at idle and optimal cooling under heavy loads.

By prioritizing these factors, you can select a PSU that delivers the power, efficiency, and clean aesthetics necessary to fuel your RX 7600 XT and future upgrades.

What is the 7600 XT minimum PSU requirement?

As per AMD's recommendation, the minimum PSU requirement for the Radeon RX 7600 XT is 600W. With that said, you an consider going a bit above 600W if you're planning to make upgrades.

Power supplies are often overlooked when considering how your computer system is built effectively. However, if your PC uses a powerful GPU, such as Nvidia’s RTX 4070 Ti Super, then choosing the right power supply can be an important step in ensuring your system runs smoothly. In this article, we've cherry-picked a list of the best PSUs for RTX 4070 Ti Super.

Products at a glance

How we picked

On the whole, we've taken a specific focus on PSUs that provide stable and efficient power delivery, particularly under typical gaming and workload scenarios. This involves evaluating PSUs for their ability to maintain consistent voltages and handle peak loads without faltering. The goal is to recommend units that not only meet the power requirements of the RTX 4070 Ti Super but also offer reliability and longevity: leaving room for upgradeability is a smart move. Of course, as we mentioned earlier we've already done our review of the 4070 Ti Super, so we're familiar of how it performs under load, and are comfortable recommending this list of CPUs we think will be a good match-up based on our hands-on experience.

Recommended specs don't go out the window either. We've noted how the 4070 Ti Super uses the same 285 watts of power as the RTX 4070 Ti, and connects to your power supply with the same (problematic) 16-pin 12VHPWR cable. Nvidia advises a 700 total system watts as a minimum for both cards. Needless to say, all our picks today go above and beyond this.

Noise level is another consideration, especially for users who prefer a quiet working or gaming environment. By integrating technical performance with user experience, our recommendations aim to provide users with PSUs that not only meet the power needs of the RTX 4070 Ti Super but also fit seamlessly into their overall system build.

What are the 4070 Ti Super PSU requirements?

As we mentioned just above there, Nvidia recommends a 700W minimum PSU for both the RTX 4070 Ti Super and the original 4070 Ti, so going for a unit of 700W or 750W at least should get you covered on the power supply front. In terms of dipping above or below this figure, it could be said that if you have a CPU that uses under 100W under full load, you might be fine with a 600W unit - these recommendations might be assuming that you've got something like a 14900K in your rig that's already pulling 300W. However, we advise that you aim for above minimum requirements, as when you eventually upgrade to a bigger and better card, you'll already have the necessary power already available to you.

Our top picks

First up, it didn't take us long to deduce that we think the Corsair RM1000X stands as the best PSU for builds using a 4070 Ti Super. For those with a little extra budget to spare, it won't go amiss when investing in a solid power supply from one of the market's best - Corsair. With a great load of power under its belt, and a heap of efficiency too, this PSU is certainly one to consider for upgrading your build. Personally, we liked it so much that in our RM1000X review, we awarded it with a lovely 4.5 stars.

As a 1000W PSU from Corsair, you can expect this PSU to have all the bells and whistles for a high-end system, and for users that like monitoring their power usage. There's not much that the RM1000X can't handle, and while it might seem a bit overkill for a 4070 Ti, 1000W is more than enough to future-proof you for years to come. What's more, the RM1000X Shift is both rated by 80 Plus and Cybernetics to a Gold standard, whilst the latter also gives it an A sound rating. Powerful, efficient, and quiet: what some might call a triple threat.

Overall the RM1000X Shift is an excellent choice of power supply for your current or any future builds.

Another reason why this particular unit design is good is the movement of the power connector to the side of the side panel, making cable management just as easy as you'd want it to be. And of course, as a 1000W PSU there is plenty of power behind it but also a lot of cables included. There are seven PCIe connectors for all your GPU or add-in card needs, and it also includes the 16-pin connector as a native PCIe 5 PSU.

What users say

Cutting to the chase, the Corsair RM1000X is highly rated on Amazon, getting an average of 4.7 stars from buyers. Unsurprisingly, people seem to like the performance and noise levels of this PSU, with one reviewer commenting that the "zero RPM fan mode ensures silent operation during low to medium loads". However, one of the few things that get a mixed reception is the aesthetics, with one user mentioning how "it's not super elegant".

Everybody likes silent PCs, but finding a PSU that contributes to this serene environment can be challenging. The be quiet! Dark Power 13 1000W excels in providing not just ample power but also an exceptionally quiet operation. Pairing this PSU with your RTX 4070 Ti Super ensures you get more than the necessary 1000W of power for your rig, along with the bliss of a near-silent performance. It’s like stepping on clouds – you have the power, but it’s so quiet that you barely notice it.

The standout feature of the be quiet! Dark Power 13 1000W is its Titanium efficiency, which reaches up to 95.2%. This high level of efficiency not only saves energy but also reduces heat output to improve silent operation. The unit’s improved frameless Silent Wings fan plays a crucial role in ensuring virtually inaudible performance, making it an ideal choice for gamers, enthusiasts, and efficiency lovers who value both power and peace.

The standout feature of the be quiet! Dark Power 13 1000W is its Titanium efficiency, which reaches up to 95.2%. This high level of efficiency not only saves energy but also reduces heat output to improve silent operation.

However, one aspect to be aware of is the PSU’s inrush current of 51 Amps. While a high inrush current can be a concern in terms of potential impact on electrical circuits, particularly during power-on, it’s important to note that this is a common trait among high-capacity PSUs. In most home and office environments, this shouldn’t pose a significant issue, especially if the electrical setup is modern and well-maintained.

What users say

One user on Amazon wrote that the be quiet! Dark Power 13 1000W is a "really stable, solid and reliable power supply with lots of wattage to spare", and this speaks of its overall good reception from users. It's also a really sleek PSU: "aesthetically this power supply really is beautiful". One thing worth mentioning though, is that a few users have mentioned that the connector cables that this unit comes with are a bit inflexible, so you may slightly struggle when it comes to curving them.

The RTX 4070 Ti Super is an excellent choice for compact system builds, and although you must select the case with caution, having a compact PSU will be essential in that instance. Enter the Corsair SF850L. This PSU, with its 850W of power, provides ample capacity to enable the 4070 Ti Super to function optimally and supports additional power requirements for other components. Its compact SFX-L form factor is a key advantage for small-form-factor PCs, ensuring that even in constrained spaces, there is no compromise on power.

 Keeping costs similar to those of ATX supplies means you’re not paying over the top for it. Along with that, you get many years out of it, with a 7-year warranty but also with an ATX 3.0 and PCIe 5 native connection, you can get many years out of it.

What sets the Corsair SF850L apart is its exceptional blend of power, connectivity, and quiet operation. Despite its compact size, Corsair has skillfully incorporated a multitude of connectors, catering to various needs and making it a versatile option for different builds. This abundance of connectors is especially beneficial for users interested in overclocking, as it provides the necessary power delivery for high-performance tasks.

What users say

With 82% of buyers on Amazon rating the Corsair SF850L 5 stars, it's fair to say it's been pretty well-received: noise levels and ease of installation were highlighted features, with one user writing that "This thing is whisper quiet and was easy to install". Coming to a downside mentioned by reviewers, one thing that came up was that the cables included with this unit are a bit on the short side, as this PSU was built for compact builds in particular.

The RTX 4070 Ti Super offers flexibility in how you build your system, and if you’re looking to save on the PSU without compromising quality, the Thermaltake Smart BX1 750W is an excellent choice. Priced at less than $70, this PSU provides the necessary 750W power for the GPU for those who want to allocate more resources to other components.

What makes the Thermaltake Smart BX1 special is its combination of affordability and performance. Despite its low price, it doesn’t skimp on quality. The PSU features main Japanese capacitors known for their reliability and longevity, ensuring stable power delivery. Its single +12V rail design supports the demands of modern GPUs like the RTX 4070 Ti Super, providing consistent performance.

Priced at less than $70, this PSU provides the necessary 750W power for the GPU for those who want to allocate more resources to other components.

One limitation, however, is that the Smart BX1 is not a modular PSU. This means that all the cables are permanently attached, which can lead to potential cable management challenges in some builds. To mitigate this, planning the layout and utilizing cable ties or other management solutions can help maintain a tidy setup, ensuring optimal airflow and aesthetics in your system.

What users say

As far as budget PSUs go, this one seems to have gone down pretty well on Amazon, with 79% of users giving the Thermaltake Smart BX1 750W 5 stars. Obviously, at $70 it represents really good value for money, and while one user commented that it's a "solid investment for gamers and PC enthusiasts seeking a reliable and efficient power supply", one other mentioned that it "worked like a charm for my budget gaming build".

Features and considerations

When selecting a PSU for the RTX 4070 Ti Super, understanding the GPU’s power demands is crucial. With a TDP of 285W, the 4070 Ti Super requires a robust and reliable PSU to ensure efficient operation. Nvidia’s suggestion of a 600W PSU provides a baseline, but it’s wise to aim higher to accommodate additional system components and potential future upgrades.

Beyond wattage, the efficiency rating of the PSU is a key factor. Opting for a unit with an 80 PLUS Gold or higher rating ensures better energy efficiency, leading to less heat generation and potentially lower electricity costs.

How many watts is a 4070 Ti Super?

The NVIDIA RTX 4070 Ti Super has a Thermal Design Power (TDP) of 285 watts. This figure represents the average power consumption under typical loads. When choosing a PSU for a system with a 4070 Ti Super, it’s important to consider the power requirements of the entire system, including the GPU, CPU, and other components, to determine the appropriate wattage for the PSU.

The RTX 4080 Super, built on the 5nm process and based on Nvidia's Ada Lovelace architecture, is one of the most powerful and efficient graphics cards on the market at the moment. This is why it's important you ensure you have the right components to go with it, including a PSU. Finding the right PSU for your GPU can be a tough ask when the market is filled with a variety of options, all with different pros and cons.

In this guide, we'll look at a variety of PSU options that are best suited to the RTX 4080 Super's features, including SFX, premium, and budget options.

How we picked the best PSU for the RTX 4080 Super

Our selection process for the best PSU for the RTX 4080 Super involves a comprehensive analysis of publicly available benchmarks and user reviews. We focus on PSUs that meet the RTX 4080 Super's minimum power requirements of 750W and provide additional headroom for system stability, especially under peak loads or when overclocking.

The goal is to recommend PSUs that offer stable and reliable power delivery across a range of scenarios, ensuring that the GPU and other components operate at their optimal potential. We consider a range of PSUs from different manufacturers, examining their performance, efficiency ratings, and the quality of their components.

We have several additional articles on the RTX 4080 Super, including our hands-on review that has helped us inform some of the decisions made in this guide. In addition to this, we've also drawn a comparison between the RTX 4080 Super and RTX 4090, so you can decide which GPU is best suited to your system.

Our top picks

The Corsair RM1000X SHIFT is an ideal choice for users seeking a balanced power supply unit for their RTX 4080 Super. This 1000W PSU brings together a combination of high-quality components and practical features, making it fully equipped to handle any high-end GPU, like the RTX 4080 Super.

What sets the RM1000x SHIFT apart is its combination of efficiency, quiet operation, and robust power delivery. The Zero RPM Fan Mode, which turns off the fan at low and medium loads, contributes to its near-silent operation, a feature especially appreciated in quiet workspaces or gaming setups. Additionally, its compliance with the ATX 3.0 standard and support for the PCIe 5.0 platform make it ready to handle next-generation hardware.

One potential downside is the PSU’s size. It extends to 180mm, which won't be a problem for most cases, but if you're using a more compact case this may be a factor to consider. However, this can be managed in most cases by removing the bottom hot-swap bay, which provides additional space. If you'd like to find yourself a larger case to match your PSU size, then check out our best case for RTX 4080 Super guide, where we list a bunch of different options to try.

While the RM1000X SHIFT might require some adjustment in smaller builds, its performance and feature set justify the space it occupies, making it a solid choice for those who prioritize a feature-rich and balanced PSU.

With a great load of power and strong efficiency, it provides a great choice for your next build

What users say

Like us, many customers have been impressed by the overall power and value of the Corsair RM1000X SHIFT, with lots of users taking to Amazon to express their satisfaction with the product. Mainly the RM1000X SHIFT's ease of installation, low noise, and high performance are mentioned.

One customer states, "First and foremost, the power delivery of this PSU is outstanding. With a whopping 1000 watts of power, it effortlessly handles the demands of my system". Another mentions their satisfaction with the noise level of the RM1000X SHIFT, stating "I like the fact it's nice and quiet and works perfectly with my system!"

If you're someone looking to prioritize a smaller size when looking for a PSU, the Corsair SF850L might just be the option for you. This fully modular STX PSU can fit into a smaller case, due to its shorter length than standard ATX PSUs. Therefore, saving space and allowing for more room in your setup.

Measuring just 125 x 63.5 x 130mm, the Corsair SF850L is ATX 3.0 and PCle 5.0 compatible meaning you'll be able to get many years out of it before you have to think about purchasing a new PSU. Additionally, the SF850L also has a number of spaced-out sockets, making it accessible and easy to plug in connectors. Despite its smaller size, the Corsair doesn't drop in quality or power, offering an impressive 850W. This exceeds the minimum 750W needed to run power the RTX 4080 Super, making it the perfect smaller-sized match.

Primarily the Corsair SF850L offers a smaller size, but being a strong power supply it has a strong offering without cutting out much

You would hope that its smaller size would be reflected in its price. However, one downside of this product is that its price is aligned with other standard ATX PSUs on the market. Unfortunately, this PSU comes in at around $150, meaning you're not paying a premium price for this PSU but it isn't too dissimilar from the price points of larger ATX PSUs.

What users say

The Corsair SF850L has received a number of reviews on Amazon, mainly discussing the positive aspects of the power supply. Customers mention their satisfaction with the performance, size, and ease of installation of this product.

One user writes, "Great product no problems and well made. Easy to install and use. The shipping was fast and pricing was fair", expressing their satisfaction with many aspects of the product. Another customer discusses the packaging of the product, "The packaging of the power supply unit and its cables is nice and clean. Even though I did not find any bag/sack for cables".

For our premium pick, we decided to go with power. The RTX 4080 Super is moving the bar up for power needs, and although it’s a very efficient GPU, the type of tasks users will be able to do will require a good deed of power. Here comes the be quiet! Dark Power Pro 13 1300W. The special thing about this PSU is that it offers 1300W of power, more than enough for any tasks you put it against. This is reflected in its price point, with it averaging at around $300.

The Dark Power Pro 13 stands out not just for its power but also for its exceptionally quiet operation and excellent thermal performance. This makes it an ideal choice for users who prioritize a silent working environment. This along with the PSU’s fully modular design adds to a clean and organized build. Lastly, the PSU is also ATX 3.0 compliant and fully supports PCIe 5.0, making it future-proof.

While the Dark Power Pro 13 excels in many areas, its filtering capabilities might not be as robust as some other models. However, for most users and typical use cases, this should not pose a significant issue. The PSU’s overall performance, efficiency, and quiet operation far outweigh this minor shortcoming, especially considering the power it provides.

What users say

The Dark Power Pro 13 has impressed users, who have taken to Amazon to express their thoughts on the product. From what we can see the majority of the reviews for this product are positive, with most customers focusing on its performance, ease of installation, and appearance.

One customer states, "This is without a doubt the best power supply I have used in any of my PC builds to date. The ease of use, versatility, and power efficiency is everything I could’ve asked for", demonstrating the multitude of reasons why this product is popular. Another user mentions the cables included with the PSU, stating "Love the high-quality sleeved cables and overall ease of use."

The RTX 4080 Super is an expensive GPU, and you may have used almost all the budget on it. If that’s the case, Corsair has a great choice for you: the Corsair CX750. This PSU provides 750 watts of power, just enough to support the 4080 Super, and does so at a price point that’s attractive for budget-conscious users. This PSU comes in at an attractive price of around $80.

The Corsair CX750 stands out in the budget category and could be just the right option to pair with your RTX 4080 Super. Measuring 150mm x 86mm x 140mm, this PSU is not as long as other options out there which is advantageous when managing cables and trying to create space in your setup. This PSU does not include a hybrid fan, which is another reason for its low pricing. This means that it can contribute to a slightly noisy build, definitely a factor to consider if you're looking to purchase this product.

As a budget PSU, it keeps things simple to keep the price down, and the power rating does still make it a consideration for stronger builds even if your choices are limited

The CX750 comes as a non-modular model, compared to the semi/full modular models seen in this guide. This means that you can't replace the power cables, which limits what connectors you use to build with. In addition to this, the Corsair CX750 doesn't come with some of the future-proofing features found on this list, like its lack of PCle 5.0. It is powerful enough for most high-end CPUs, however you will have to make do with just three PCle connectors.

What users say

A great way of deciding if a component is the right choice for your setup is seeing how other users have received it. By looking at reviews of the CX750 on Amazon, we can see that the majority of user experiences with the product are positive. Customers mainly mention satisfaction with the ease of installation, performance, and value of this product.

One customer states, "It’s modular, rock solid and very quiet. Everything is working better and the CPU and hard drive are noticeably scaling and working faster", demonstrating how versatile this product can be. Another user writes, "It’s a solid choice for building a powerful, yet tidy PC setup" showing the simplicity of the product.

Features and considerations

The RTX 4080 Super requires a PSU with a minimum of 750W. However, it’s prudent to consider PSUs that offer a bit more headroom, especially for users who plan to overclock, add additional components, or future-proof their system.

Also, look for PSUs with an 80 PLUS Gold or higher certification, as these are more efficient, converting a higher percentage of the electrical energy into power for the PC while wasting less heat. This efficiency not only saves on energy costs but also contributes to the longevity of the PSU and system components by reducing heat output.

How much power does a 4080 Super consume?

The NVIDIA RTX 4080 Super typically consumes around 320 watts of power. This power consumption can vary based on the specific tasks being performed and any additional overclocking. When planning a build with this GPU, it’s important to factor in the power requirements of other components as well, particularly a high-performance CPU and any other peripherals.

So, to make your search all the easier, we've done the research for you and compiled a list of some of the best PSUs to pair with the RTX 4070 Super, that make handling your power conversion and cooling a breeze.

How we selected the best PSU for RTX 4070 Super

Our approach to selecting the best PSU for the RTX 4070 Super involves a comprehensive analysis of both publicly available benchmarks and user reviews, supported by our extensive topic knowledge of graphics cards, PSUs, and PC building. Naturally, the goal is to recommend PSUs that provide stable and reliable power under various load conditions, ensuring that the GPU and other system components operate at their optimal potential. Firstly, it's essential to consider the power demands of the RTX 4070 Super, making sure that we choose units that not only have positive user reviews but exceed the needs of the GPU. 

The noise level is another crucial consideration, particularly for users who prefer a quiet working environment, but there's also build quality, modularity, and efficiency to take into account, and we weigh in on each topic equally. By integrating both the technical performance and user experience aspects, our recommendations aim to provide users with PSUs that are not only powerful and efficient but also user-friendly and durable.

If you're after more PSU recommendations, then you can read through our best power supply for gaming guide. However, off the back of the latest Nvidia GPU release, we've been considering pairings for the new Super lineup including the best CPU for the RTX 4070 Super, and the best motherboard for the 4070 Super too.

The Fractal Design Ion+ 860P is a top notch PSU for the RTX 4070 Super, with its ability to prioritize quiet operation and efficiency. It achieves an 80+ Platinum rating, meaning it wastes less power as heat, reducing your electricity bill and keeping your PC cooler. Additionally, reviewers praise its whisper-quiet operation thanks to a large 140mm fan and a special mode that keeps noise levels down even under load. Check out our review for more information.

Although a more expensive choice of power supply, the Fractal Design Ion+ 680P brings a high level of efficiency and Wattage to your build.

However, with all that being said, the Fractal Design Ion+ 860P might not be ideal for everyone. While it offers 860 watts of power, some competing PSU manufacturers like the Seasonic can deliver similar performance at a slightly lower price point. Lastly, while 750W is more than sufficient for the RTX 4070 Super, this will be difficult to upscale to more premium GPUs, especially those coming out in the future which are sure to be more demanding.

The Cooler Master V750 Gold i PSU stands out in the realm of power supplies with its 750W output, ideal for mid to high-end gaming setups. It's equipped with an 80 PLUS Gold efficiency rating, ensuring that most of the power drawn is effectively used, reducing wastage and heat generation. This unit is fully modular, meaning you can use only the cables you need, aiding in better cable management and airflow within the PC case. The PSU also includes intelligent fan control, which helps maintain a balance between cooling and noise levels.

Furthermore, the Cooler Master V750 Gold i is the perfect fit for those users who prioritize efficiency over anything else in their builds. This is especially true thanks to its fully modular design that creates an organized look inside the case with neat cable management; while the high-efficiency rating means it's cost-effective in the long run. Overall, its efficiency and cooling features mark this unit as the best PSU for the RTX 4070 Super.

The Seasonic Prime Fanless TX-700 ATX is a unique offering in the PSU market, targeting users who seek the utmost silence. As a fanless PSU, it operates completely silently, making it perfect for noise-sensitive environments like recording studios or quiet workspaces. Despite being fanless, it doesn't compromise on power, offering a solid 700W output. The unit boasts an 80 PLUS Titanium efficiency rating, the highest available, ensuring minimal heat generation and power wastage.

This PSU is particularly well-suited for users who require a quiet operation without sacrificing performance. Its fanless design eliminates the noise typically associated with PSUs, while the high-efficiency rating guarantees reliable operation. It's also fully modular, allowing for a tidy build. However, it's important to ensure that the PC case has good airflow, as the PSU relies on passive cooling. On the whole, the Seasonic Prime Fanless TX-700 is ideal for professionals in sound-sensitive environments or any user who prefers a silent PC setup.

The MSI MEG Ai1300P stands as a pinnacle of power supply engineering, tailored for high-end gaming rigs and professional workstations. It boasts a massive 1300W of power, making it more than capable of handling the most demanding systems. This PSU is 80 PLUS Platinum certified, ensuring high energy efficiency and less heat generation. Additionally, it features AI-powered software for smart power management, allowing users to monitor and optimize power usage in real-time. The fully modular design further enhances the appeal by providing flexibility in cable management and a clean setup.

This PSU is particularly beneficial for users running multi-GPU setups, overclocked systems, or extensive custom builds. The MSI MEG Ai1300P's high power capacity ensures stable supply even under peak loads, while the AI management helps in balancing power efficiency and performance. It's also equipped with robust protections against overcurrent, overvoltage, and overheating, adding an extra layer of safety to expensive components. For enthusiasts and professionals who demand the best, this PSU delivers not just in terms of raw power but also in smart functionality and reliability.

The Thermaltake Smart BX1 750W is an excellent option for budget-conscious users seeking reliable power without breaking the bank. With a 750W output, it is well-suited for most mid-range gaming setups and standard PC builds. This PSU carries an 80 PLUS Bronze certification, offering decent efficiency for its price range. It also features a non-modular design, which is typical for budget PSUs but requires careful cable management to maintain airflow and aesthetics in the PC case.

Essentially, this unit is ideal for users who need a straightforward, no-frills power solution. Its solid power output can handle common gaming and computing tasks along with a bit more demanding ones. Although it doesn’t offer the high-end features of more expensive models, we ensure, it delivers what is necessary for a stable and reliable power supply.

Considerations for the best PSU for RTX 4070 Super

When selecting the best PSU for the RTX 4070 Super, it's essential to consider more than just the wattage. While a 550W PSU is suggested for the RTX 4070 Super by Nvidia, opting for a 700W or higher PSU provides a safer margin, especially when paired with high-performance CPUs and other components. It's crucial to account for the total power requirements of the entire system, not just the GPU.

Apart from efficiency, it's also worth considering the noise level, with some PSUs featuring fanless designs or quiet fans for a noise-free environment. For those looking to build aesthetically pleasing rigs, PSUs with sleeved cables or RGB lighting might be appealing, although of course these features should never be prioritized over the performance and reliability of the unit.

How much power does the RTX 4070 Super use?

The RTX 4070 Super has a typical power consumption of around 220 watts. However, when planning a build with this GPU, it's crucial to consider the overall power requirements of the entire system: a power supply unit with at least 550 watts is recommended to ensure stable and efficient operation, especially under load.

The PSU might not be the most discussed piece of hardware, but there's no denying its crucial role in any PC build. What's more, using the wrong one could be costly, as it supplies power to your whole system. Although Nvidia suggests a baseline of 650W for these GPUs, equipping your system with additional power capacity, such as a 750W PSU, provides a cushion for future upgrades and ensures optimal performance. However, while 750W will keep you going for direct successors such as the 4070 Super lineup, truly top-end graphics cards, such as the 4090 or the upcoming 50 series, are demanding more and more power, up to the likes of 1000W.

Anyhow, to jump back to the matter at hand, we've compiled a list of some of the best power supplies we think should be paired with a rig using an RTX 3070 or 3070 Ti, looking at options for efficiency, a budget, and of course, future-proofing.

Products at a glance

How we picked

Selecting the best PSU for the RTX 3070 and 3070 Ti involves a thorough analysis of both user requirements and PSU capabilities. Of course, we draw a lot on our RTX 3070 review too, as that has given us a clear vision of how the card performs under load, meaning our choices are curated based on real-life experience.

Our selection process begins by considering the graphics cards’ power demands, ensuring that the recommended PSUs not only meet but exceed these needs. This foresight is particularly essential for those eyeing future system upgrades or who might engage in activities like overclocking.

Beyond raw power, we also evaluate the efficiency, build quality, modularity, noise levels, and additional features of each PSU. User reviews, expert opinions, and hands-on testing are invaluable in this process, offering insights into long-term reliability and real-world performance.

Our top picks

Corsair’s RM750x is a fan favorite; and for good reason, too. It’s a 750W PSU, sporting an 80 Plus Gold efficiency rating, ensuring your power delivery is both stable and energy-efficient. Not to mention, it’s fully modular, giving you the flexibility to use only the cables you need, aiding in a cleaner build.

This PSU is a superb fit for those wanting a mix of performance, reliability, and value. If you’re pairing it with an RTX 3070 or 3070 Ti, rest assured it’ll handle your graphics card with ease, even leaving some wiggle room for additional components. And if you’re someone who loves a neat and tidy build, the modularity here is going to be a blessing.

Corsair’s RM750x is a fan favorite; and for good reason, too. It’s a 750W PSU, sporting an 80 Plus Gold efficiency rating, ensuring your power delivery is both stable and energy-efficient.

What's more, Corsair has equipped its RMx lineup with several extra features, on top of the Cybernetics and 80 PLUS certifications. that help make this PSU even more efficient - and even better value for money. For one, the magnetic levitation fan used on these units should lead to an increased lifetime under high operating temperatures. This is also good because the cooling fan is a crucial part of every PSU, and it highly affects its reliability. To this end, it's important to use the best fan types when you can. On top of this, there are other boosts to efficiency too, such as the modern standby compatibility for fast wake from sleep times.

The Corsair RM750x is a testament to why Corsair is such a trusted name in the PSU market. It strikes the right balance, making it an excellent choice for most RTX 3070 and 3070 Ti users.

What users say

We've praised the Corsair RM750x highly, and so have users on Amazon, with 88% of buyers awarding it with a 5-star rating. In particular, they seemed to have picked up on the noise levels, modularity, and ease of installation of this PSU as being good. One user mentions that it "remains extremely quiet even when under near-full load", with another commenting that they like how it's "fully modular...which eases the strain of the cable management chaos". So, for a quiet and easy-to-install PSU, you should certainly be taking a look at the RM750x - it also comes in an 850W or a 1000W version should you want even more power.

Next up, we've got the Corsair HX1000i as our future-proof choice of PSU - and it's clear why. This 1000W has all the bells and whistles of a unit that's built to last, not to mention that it comes with a 10-year warranty too. As well as getting the seal of approval from an 80 Plus Platinum rating, the inclusion of ATX 3.0 makes it a modern choice for newer graphics cards: needless to say, a 1000W PSU should see you far beyond an upgrade to a 4090. As you can expect, it's fully modular too, so no matter your GPU your build should stay free of cable chaos.

Considering its price and the support behind it, it should be one for the years, and you’d like to think so. With a robust portfolio, we don’t expect too much disappointment from Corsair

This PSU might seem like it’s flexing its muscles a bit too much for an RTX 3070 Ti, but here’s the catch – it’s perfect for future-proofers. If you’re the kind of builder who loves to be one step ahead, relishing in the fact that upgrades down the line will be seamless, then the HX1000i is your ticket. Plus, with its advanced features and efficient cooling, it promises smooth operation even under load.

While it’s on the pricier side, the HX1000i is a powerhouse that delivers. Its forward-thinking design ensures that even as you swap out GPUs in the future, your PSU will remain unfazed.

What users say

Corsair has a strong reputation for impressive build quality and top-tier performance, and the HX1000i doesn't let it down at all in that respect. It's been well received by buyers across Amazon, with one review commenting that "although this PSU may have a higher upfront cost, its superior efficiency rating will eventually lead to savings". Corsair's iCue software has also been commended here, for its prowess in power monitoring - a perk you'll get from any Corsair PSU. However, there was another user that mentioned that it's "quiet but overpriced", so there's been some mixed reception on the steeper price of this unit.

Next up, as our budget PSU for pairing alongside an RTX 3070 or 3070 Ti, we've got the Corsair CX750. Not only does it go above and beyond Nvidia's minimum recommendation of 650W, but it does so while keeping its pricing well under the $100 mark. Basically, it's a really wallet-friendly choice for budget or entry-level builders, that shouldn't give you any problems when it comes to installation either. The CX750 is also one of the units that we've reviewed in-house too, so it's got our seal of approval too.

as a budget PSU, it keeps things simple to keep the price down, and the power rating does still make it a consideration for stronger builds even if your choices are limited

However, the limit on its price does mean there's a limit on additional features too, and some of these are worth highlighting so you get the full picture of what this PSU has to offer. As an 80 Plus Bronze certified PSU, the CX750 has a slightly lower efficiency rating compared to gold or platinum options, meaning you'll get slightly higher power consumption and electricity costs overall. What's more, it's not a PCIe 5 PSU. While this isn't necessarily a bad thing, it means that it doesn't have the native 12VHPWR connectors for some of the best GPUs out there from Nvidia. 

What users say

As we've mentioned, Corsair is a reliable brand for power supply units, and the CX750 is a pioneer of value and performance for its respective price. On Amazon buyer in particular commented that they like the unit for its "quiet operation and reliable performance", and what's more, they say that "it’s a solid choice for building a powerful, yet tidy PC setup". There's a bit of mixed reception on the aesthetic of the cables, but it's praised as an all-round solid unit.

Stepping into the budget-friendly realm without cutting corners is the Cooler Master MWE Gold 750 V2. It boasts a 750W capacity with a commendable 80 Plus Gold efficiency, ensuring that you’re getting a solid power delivery without the hefty price tag. Being fully modular, it’s designed to help you maintain a clean and tidy setup, eliminating unnecessary cable clutter.

In essence, the Cooler Master MWE Gold 750 V2 is proof that you don’t need to empty your wallet to get a reliable power supply. It’s the perfect blend of value, efficiency, and reliability for the savvy gamer.

This PSU is a boon for budget-conscious gamers who still want performance. The RTX 3070 and 3070 Ti will find a harmonious partner in the MWE Gold 750 V2, ensuring optimal performance without breaking the bank. Plus, its silent fan technology ensures that your immersive gaming sessions remain undisturbed.

In essence, the Cooler Master MWE Gold 750 V2 is proof that you don’t need to empty your wallet to get a reliable power supply. It’s the perfect blend of value, efficiency, and reliability for the savvy gamer.

Features and considerations

Selecting the right PSU for the RTX 3070 and 3070 Ti transcends merely meeting power requirements. It’s about ensuring consistent, reliable power delivery and system stability. When considering a PSU, it’s essential to scrutinize its efficiency rating. A higher rating, such as 80 Plus Gold or Platinum, translates to less wasted energy and potential cost savings over the lifespan of the unit. As well as the GPU, other components in your PC such as the CPU, RAM, and drives also require power, and can hence be affected by inefficient power delivery. The wasted power and heat can lead in a decrease in the lifespan of your precious PC parts.

The PSU’s form factor, safety features, and brand reputation further play crucial roles. Standard ATX will fit most mid-to-large-sized cases, but SFX might be more appropriate for compact builds. Safety features like Over Voltage Protection (OVP) and Short Circuit Protection (SCP) are vital in preventing potential damage to your components.

Is 750W enough for the RTX 3070 Ti?

Yes, in line with its minimum requirements, 750W should provide a comfortable margin for an RTX 3070 Ti, ensuring optimal performance as well as potential future upgrades. It's also not a necessarily power-hungry GPU either, so you should have no problems with fitting a 750W PSU into your rig for this GPU setup. It's not the most future-proof option to go for though, as an 850 or 1000W will see you without need for a PSU upgrade when it comes to getting a 40 or 50-series card from Nvidia when the time is right.

As the TDP and power needs of the RTX 3080 stand at 350/320W for the 12/10GB model, it's crucial to understand the nuances of picking the ideal PSU, given that the Founders Edition recommends a system power of 750W. Moreover, custom AIB versions, depending on their overclocks or margins, might nudge the requirement upwards to 850W.

How we selected the best PSU for RTX 3080

Selecting the ideal PSU goes beyond merely matching the wattage requirements. First and foremost, we account for the reliability and reputation of the PSU brand and model. Given that the PSU is a critical component safeguarding every other part in your PC, it's imperative to choose from brands with a track record of dependability and longevity. Next, we scrutinize the efficiency rating.

Moreover, the nature of GPU tasks, especially in extended gaming or rendering sessions, means the PSU must consistently deliver power without overheating. Therefore, thermal performance, fan curves, and the quality of capacitors play a pivotal role in our assessment.

The Corsair SF850L is a great match for the RTX 3080, particularly for small form factor builds. With 850W, it comfortably handles the 3080's typical 320W draw, leaving headroom for overclocking or other power-hungry components. Furthermore, its SFX-L size makes it perfect for smaller cases where space is at a premium. Fully modular cables allow for clean and efficient use of space, and quiet operation ensures a headache-free PC experience.

SF850L is an ideal choice for small form factor PCs with its SFX-L design.

Overall, the Corsair SF850L's combination of high wattage, compact size, and quiet operation makes it a top choice for powering an RTX 3080.

What users say

Corsair's SF850L has a good online reputation, praised for its handling mid-range and high-end GPUs like the RTX 3080 and its small SFX-L size. Reviewers on Amazon appreciate its quiet operation at low loads, but some find the fan noise unacceptably high under heavy use. Though, most provided 5 star reviews. One reviewer noted it as "A wonderful PSU, and Cheaper than comparable 1000w SFX-L PSU's on the Market".

If you're on the lookout for a power supply that's trusted by enthusiasts worldwide, the Corsair RM850x should be on your radar. This PSU boasts an 80 PLUS Gold rating, ensuring up to 90% efficiency under typical loads. It's fully modular, which means cable management will be a breeze, and you'll only use the cables you need, maintaining a tidy build.

For those diving deep into intensive gaming or content creation tasks, the RM850x stands out with its low noise operation, courtesy of its zero RPM fan mode. So, when the demand isn't too high, this PSU keeps things hush-hush. And when it comes to longevity, Corsair's ten-year warranty is like a comforting pat on the back, ensuring you're covered for a good long while.

What users say

Amazon reviewers laud the Corsair RM850x for powering even the largest of gaming rigs with its 850W and modular cables for a clean look. The 10-year warranty assures long life, and recent reviews point to quieter operation thanks to a magnetic levitation fan. However, some reviewers with older units mentioned higher noise levels, and some found the SATA power cables stiff. In one 5 star review, a user stated "Reliable Power Delivery with Efficiency and Modular Design".

Stepping into the realm of design flair combined with stellar performance, the Asus ROG Thor 850W is something to behold. This PSU doesn't just satisfy your power requirements; it does it with style. An 80 PLUS Platinum efficiency rating speaks volumes about its ability to deliver power consistently while keeping waste to a minimum.

Now, let's address the elephant in the room - or should I say, the flashy centerpiece? The ROG Thor comes with an integrated OLED panel displaying real-time wattage, a feature that's bound to get the tech enthusiasts among you all giddy. And then there's the customizable RGB lighting that complements almost any build.

If you're into aesthetics as much as performance, you're going to love this. But remember, the ROG Thor isn't just about the visuals. Its performance, backed by a decade-long warranty, ensures you're not just paying for the lights.

What users say

Amazon reviews on the ASUS ROG Thor 850 are generally positive. Gamers love the fancy OLED wattage display and RGB lighting for a showstopping PC, and its 850W ensures reliable power for those using the RTX 3080. However, it's pricier than similar PSUs, and some find the cables bulky and the wattage display potentially hidden depending on the case layout. If you prioritize unique looks and have the budget, the ROG Thor could be a winner.

In the PSU landscape, Seasonic has made a name for itself by consistently churning out high-quality units, and the Focus Plus 750 Gold is no exception. This power supply boasts an 80 PLUS Gold efficiency rating, promising less waste and more of your power going where it's needed.

The fact that it's fully modular makes it a dream for those who have a keen eye for cable management, ensuring you only plug in the essentials and maintain a clean aesthetic.

Stepping away from just the technicalities, the Focus Plus has a compact form factor, which is perfect for those tight builds or cases that don't offer a lot of wiggle room. But don't let the compact size fool you; this PSU comes with a strong cooling system, featuring a fan that operates silently under typical load but can ramp up when necessary.

When you're gunning for the RTX 3080 but are keeping a watchful eye on your wallet, the Cooler Master MWE Gold 850 V2 steps up as an enticing option. As its name suggests, it still brings to the table an 80 PLUS Gold efficiency rating, ensuring your rig gets the juice it needs without squandering energy.

Beyond the specs sheet, the MWE Gold offers a fairly straightforward experience for builders. A wide range of connectors ensures compatibility with a variety of components, though, as mentioned, some setups might need to double up on power cables for the GPU. Nevertheless, the freedom of full modularity means your rig can look as clean and organized as pricier alternatives.

In essence, the Cooler Master MWE Gold 850 V2 proves that a tight budget doesn't mean settling for less. However, remember every budget option comes with its considerations.

What users say

With over 75% of users providing 5 star reviews, the Cooler Master MWE Gold 850 V2 is considered to have a good online reputation based on Amazon reviews. Users praise is ample 850W and performance with mid-range GPUs like the RTX 3080. One user noted it as having "Great value for money!".

Considerations for the best PSU for RTX 3080

A power supply unit, while seemingly a straightforward component, possesses various attributes demanding attention. Beyond mere wattage, the PSU's efficiency, often denoted by its 80 PLUS rating, signifies how effectively it converts power from the wall outlet to your system, with Platinum and Titanium being the top tiers.

For a GPU as powerful as the RTX 3080, a higher efficiency PSU can be advantageous, not only for power consumption but also for ensuring stable performance. 

Furthermore, consider the PSU's modular nature. Fully modular PSUs provide the advantage of connecting only the necessary cables, leading to a cleaner setup and potentially better airflow inside the chassis.

Should I get a 1000W PSU for 3080?

1000W is too much for an RTX 3080. Nvidia recommends a 750W PSU for the founder's edition. If you want to be on the safe side, especially considering other system components and potential future upgrades, an 850W unit is ample.

Is 750W enough for RTX 3080?

Yes, 750W is what Nvidia recommends for this GPU. However, if you're looking to ensure optimal power, especially when considering partner GPUs and overclocking endeavors, stepping up to an 850W unit would be a prudent decision.

How we selected the best PSU for RX 7600

Our selection process for the best PSU for RX 7600 started with identifying the most reliable brands in the market. We then evaluated their offerings based on the power output, efficiency, form factor, modularity, and warranty.

 Customer reviews and professional critiques were also invaluable in assessing real-world performance, reliability, and overall satisfaction. Furthermore, we took into account the compatibility with the RX 7600, ensuring the PSU would provide the GPU with stable and sufficient power.

The Corsair SF850L is a perfect fit for the RX 7600. Unlike standard PSUs, the SF850L's SFF form factor squeezes into the tight confines of SFF cases, making it ideal for mini-ITX builds. However, don't be fooled by its size. The SF850L boasts a whopping 850 watts of power, which is well above the RX 7600's needs. This extra power ensures cool operation and future-proofs your system for potential upgrades - adding value to your purchase. Plus, the SF850L utilizes fully-modular cables. In an SFF case with limited space, we call this a game-changer. You only connect the cables your components need, reducing clutter and improving airflow. Top it off with the trusted reliability of Corsair's brand reputation, and the SF850L becomes a clear winner for powering an RX 7600 in a compact and powerful SFF PC.

The Corsair SF850L is a handy dandy little PSU. As a small form factor choice, it provides great power and performance with great efficiency.

What users say

Users online were impressed with the low noise levels, compact size, and strong performance of this power supply. Reviews highlight its quiet operation, perfect fit within cases, and ability to deliver the promised power output. Positive remarks extend to the unit's aesthetics, ease of installation, and overall quality. One Amazon user stated "Great product no problems and well made. Easy to install and use. The shipping was fast and pricing was fair."

Pairing the RX 7600 GPU with the Seasonic Focus GX-850 is a smart move for a couple of key reasons. First, the 850W of power delivery far exceed the RX 7600's needs. This extra room ensures the PSU runs efficiently and stays cool, even under load. More importantly, it provides ample power for future upgrades - which adds important value to this purchase. If you plan on adding a beefier graphics card or other demanding components later, the Focus GX-850 will almost certainly have the wattage to handle it without needing a PSU replacement.

A strong power supply that has improved over the years. Keeping up with the latest hardware while keeping the standard high. 

Beyond just wattage, the Seasonic Focus GX-850 is known for its reliability. Seasonic is a trusted brand in the PSU market, and the Focus GX-850 is built to deliver stable, consistent power to your system. This translates to a smoother PC experience, especially during graphics-intensive tasks like gaming. While noise levels can vary on a case-by-case basis, the Focus GX-850 is generally considered a quiet option by PSU standards. This helped by its fully-modular system which provides a hybrid mode for silent running. Its 10 year warranty is also a huge a plus for most gamers looking to bring longevity to their system.

What users say

With 87% of reviews indicating a 5 star rating, the Seasonic Focus GX-850 is acclaimed online. Amazon users praise its performance, longevity, premium-feel, and ease of installation. In a short, but sweet review, one user noted "Nothing but quality. End of story." Looks like this PSU couldn't be recommended enough.

Looking for a low cost caption that just makes it into the minimal requirements? Well, the Thermaltake Smart RGB 500W might catch your eye. It will perform reasonably well here and keep costs low, but there are some drawbacks when going for low wattage PSUs. While the 500W Smart RGB might power the card, it wouldn't leave much room for overclocking or future upgrades. Running a PSU close to maximum capacity can lead to inefficiency, overheating, and even system instability.

A strong choice if you only need a 500W PSU on a low-powered system.

Thermaltake is a well-known brand, but the Smart RGB line is a budget series and may not offer the same reliability as higher-end PSUs. This could raise concerns about the unit's longevity and stability, especially when powering a mid-range graphics card like the RX 7600. So, while this card will do the job for those who really want to keep money spending to a minnium, it is not recommended for those who want upgrades or powerful settings.

What users say

While Amazon users praise the system power device's performance, value, and attractive RGB lighting, reviews are split on noise levels, build quality, cable management options, and the adjustability of the RGB brightness. Many find it delivers strong power output and is a good purchase for the price, but some have concerns about potential drawbacks like noise and aesthetics. One user noted it has "Never died on me and i had it for years, wasn’t expensive at the time of purchase either."

The Corsair CX750 is another solid option for powering a PC built around the AMD Radeon RX 7600. With 750W of power, it comfortably exceeds the RX 7600's minimum requirement, providing room for future upgrades. Users praise the CX750 for its quiet operation and reliability, ensuring smooth performance without distracting noise, while reviewing this product ourselves we found this also to be the case. While the short cables can be a problem for some, these are minor inconveniences for a budget-minded build. Overall, the Corsair CX750 offers a good balance of affordability, power, and reliability, making it a suitable choice for an RX 7600 system.

If you’re after a more budget PSU, the Corsair CX750 provides a good choice, dropping down from its initial cost makes it a lot more competitive choice.

What users say

Users on Amazon consider the Corsair CX750 a good value for a budget-friendly power supply. It is praised for its quiet operation and reliability, with some users even reporting several years of trouble-free use. However, some reviewers mention minor drawbacks like potentially short cables.

Considerations for the best PSU for RX 7600

When choosing the best PSU for RX 7600, several factors come into play. First and foremost is the power output, which should align with your system's overall power consumption, keeping in mind that the RX 7600 has a power draw of 165W. PSUs between 500W to 850W offer enough power for most systems and provide some headroom for future upgrades. 

Second, the efficiency of the PSU is essential. It is often measured using the 80 Plus rating system, with categories like Bronze, Silver, Gold, Platinum, and Titanium, each indicating higher efficiency levels.

Finally, the reliability and longevity of the PSU matter. Well-respected brands tend to produce higher quality and more durable power supplies. Also, a good warranty can give you peace of mind.

How many watts does an RX 7600 use?

The RX 7600 has a power draw of approximately 165 Watts under maximum load. As this is a very power-efficient GPU, you can handle it very well with a PSU between 500W and 850W if you are thinking of overloading your rig.

Can a 450W PSU handle an RX 7600?

A 450W PSU might handle an RX 7600 under minimal load, but it's recommended to have at least a 500W PSU for optimal performance and to ensure stability under full load, especially when other components are taken into account.