Home > PSU > PSU Buyer's Guide

Best PSU for Ryzen 7 5800XT – our top picks

Ensure enough power for your components with these power supplies
Last Updated on August 8, 2024
Best PSU for Ryzen 7 5800XT
You can trust PC Guide: Our team of experts use a combination of independent consumer research, in-depth testing where appropriate - which will be flagged as such, and market analysis when recommending products, software and services. Find out how we test here.

The Ryzen 7 5800XT was launched on July 31st with a price tag of $249 and is currently available for purchase on Amazon and Newegg. Or, you can check out our Where to Buy 5800XT page if you want to explore other retailers.

This CPU has a TDP of 105W. While it isn’t the most power-hungry processor out there, you’ll still need a decent power supply, especially if you’re pairing it with other high-end components.

We’ve reviewed several PSUs and have put each one through intense testing during the process. Based on the results we got, we’ve selected a handful of options that we think are the right fit for the processor. We made sure to select only the ones that offer enough power and can keep your components safe. And since CPUs with a TDP of around 105W tend to run hot, you may want to check out the best CPU cooler for Ryzen 7 5800XT.

So, without any further ado, let’s dive in!

How we picked

For this list, we went through a great number of PSUs and selected the ones that we think offer the best value for money. As we never solely rely on online ratings and reviews to choose the products for our guides, we conduct rigorous testing on each PSU to assess its real-life performance. To understand our testing methods in detail, feel free to check out how we test components.

Our top picks

Best PSU for Ryzen 7 5800XT overall
01
  • Corsair RM750x info sticker, Image by PCGuide
  • Corsair RM750x inside PC, Image by PCGuide
  • Corsair RM750x on top of box, Image by PCGuide
  • Corsair RM750x power connectors, Image by PCGuide
  • Corsair RM750x side, Image by PCGuide
  • Corsair RM750x box contents, Image by PCGuide
  • Corsair RM750x box profile, Image by PCGuide
  • Corsair RM750x box, Image by PCGuide
  • Corsair RM750x fan, Image by PCGuide
  • Corsair RM750x in front of box, Image by PCGuide
  • Corsair RM750x back power input, Image by PCGuide
  • Corsair RM750x end profile, Image by PCGuide
Outstanding
Specifications
  • Wattage: 750W
  • Form Factor: ATX
  • Rating: 80 PLUS Gold, Cybenetics Gold
  • Design: Fully Modular
Reasons to Buy
  • It has an MTBF of 100,000 hours
  • It comes with a 10-year warranty
  • It has a 135mm maglev fan
Reasons to Avoid
  • It doesn’t support ATX 3

If you want a power supply that ticks all the boxes of a strong and reliable PSU, then we’d recommend the Corsair RM750x. This one offers excellent build quality and is solid for mid-range components. In our RM750x review, we found it to be a great choice for multiple processors, including the Ryzen 7 5800XT.

Let’s talk about efficiency first. The RM750x is 80 PLUS and Cybenetics Gold certified. This means that you shouldn’t worry about running into any power-related issues with this PSU installed in your rig. According to Cybenetics, the PSU is 87.980% efficient and 90.2% efficient at 115V and 230V, respectively. 

The Corsair RM750x is an all-around strong choice of power supply.

PC Guide

When it comes to its size, it measures 150mm W x 86mm H x 160mm L. So, while it’s not one of the smallest PSUs out there, it should be compatible with a wide range of cases. On top of that, its cables also don’t come permanently attached, as the RM750x offers a fully modular design.

As noise is a big concern for many PC users, we tested the sound levels of the RM750x. At 115V, the average sound output was around 27.98 dB. At 230V, it was around 28 dB. This is pretty impressive, considering a whisper is usually between 20 to 30 dB. 

Overall, if you’re looking for a PSU that won’t let you down when it comes to performance and won’t generate too much noise, then the Corsair RM750x is the way to go. 

What users say

Users on Amazon are satisfied with their purchase, and most of them are praising its build quality and performance. One of them mentioned in their review: “Worked great for my application. Provides the power my PC requires and works perfectly. Shipping was fairly quick and packaged very well.” 

Best high-end PSU for Ryzen 7 5800XT
02
  • Corsair RM850x Shift White power input and switch, Image by PCGuide
  • Corsair RM850x Shift White on top of box, Image by PCGuide
  • Corsair RM850x Shift White logo side, Image by PCGuide
  • Corsair RM850x Shift White info sticker top, Image by PCGuide
  • Corsair RM850x Shift White in PC, Image by PCGuide
  • Corsair RM850x Shift White in front of box, Image by PCGuide
  • Corsair RM850x Shift White in build, Image by PCGuide
  • Corsair RM850x Shift White fan, Image by PCGuide
  • Corsair RM850x Shift White connector ports, Image by PCGuide
  • Corsair RM850x Shift White box, Image by PCGuide
  • Corsair RM850x Shift White box contents, Image by PCGuide
Best in ClassExcellent
Specifications
  • Wattage: 850W
  • Form Factor: ATX (160mm L)
  • Rating: 80+ Gold, Cybenetics Gold
  • Design: Fully modular, side connectors
Reasons to Buy
  • It features the ATX 3.1 standard
  • The innovative side connector design makes it easy to connect cables
  • It has excellent built quality and internal components
Reasons to Avoid
  • The accompanying type 5 cables can be challenging to handle
  • The Shift and white variants cost more

If you’re willing to spend around $170 on a PSU, then you’d want to get the RM850x Shift. This one may come with a premium price tag, but it’s an excellent choice for those who don’t want to compromise on the power supply of their rig. In our RM850x review, we didn’t face any issues when we paired it with two high-end components.

To begin with, just like the first PSU on our list, the RM850x also has an 80 PLUS and Cybenetics Gold rating. During their test, Cybernetics found it to be 88.672% efficient at 115V and 90.817% at 230V.

The best part is that even though it offers more power than the RM750x, it is still much quieter. At 115, the noise levels stayed around 22.94 dB. This increased to only 23.03 dB when we switched to 230V. So, you won’t have to worry about constantly hearing noise from your unit.

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

PC Guide

As far as the size is concerned, it is around 160mm in length and is almost similar to most of the other ATX PSUs out there. However, since its connectors are on the side instead of the back, you may want to check your case before getting it.

For our test, we decided to pair the RM850x Shift with the Ryzen 7950X and RTX 3090. Both are high-end components and draw a lot of power. However, throughout the test, we didn’t run into any power-related issues. 

Overall, the 850W capacity, innovative design, and the ability to power high-end components make the RM850x Shift worth every penny. 

What users say

The reviews on Amazon for the RM850x are nothing but good. One of them said: “Set up was easy and fast, simply had to reconnect all my cables to the appropriate spots and if this thing makes any noise, it’s not even noticeable. Definitely would recommend this brand to fellow builders as I’ve never experienced any issues installing or powering my components with their PSU.” 

Best budget PSU for Ryzen 7 5800XT
03
  • Corsair CX750 and box, source PCGuide
  • Corsair CX750 box contents, source PCGuide
  • Corsair CX750 box profile, source PCGuide
  • Corsair CX750 box, source PCGuide
  • Corsair CX750 connector end, source PCGuide
  • Corsair CX750 connectors, source PCGuide
  • Corsair CX750 fan side, source PCGuide
  • Corsair CX750 info sticker, source PCGuide
  • Corsair CX750 inside PC, source PCGuide
  • Corsair CX750 logo side, source PCGuide
  • Corsair CX750 on top of box, source PCGuide
  • Corsair CX750 plug side, source PCGuide
Highly Recommended
Specifications
  • Wattage: 750W
  • Form Factor: ATX
  • Rating: 80 Plus Bronze, Cybenetics Silver
  • Design: Non-modular
Reasons to Buy
  • It comes in a very affordable price range
  • The rifle-bearing fan has a long lifespan and helps lower the noise output
Reasons to Avoid
  • It is non-modular, which hinders any customization
  • It can get noisy under heavy load

If you can’t spend more than $100 on a PSU and are looking for a budget option instead, then you’d want to check out the Corsair CX750. This is yet another Corsair PSU on our list, and it’s a great power supply to pair with the Ryzen 7 5800XT. In our CX750 review, it didn’t disappoint us in terms of performance.

To begin with, the Corsair CX750 has an 80 PLUS Bronze and Cybenetics Silver rating. While this isn’t as good as the above two PSUs, it is still decent and will keep your components safe from power spikes. 

When it comes to size, the CX750 measures 150mm x 86mm x 140mm. This makes it compatible with most PC cases, but don’t expect it to be compatible with ITX PC cases, which can usually host an SFX PSU.

The CX750 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

PC Guide

We tested the CX750 in the same rig we used for the RM850x. While the 850x drew 705W, the CX750 was drawing 736W under full load. As the 7 5800XT has a significantly lower TDP than the 7950X, you’ll be more than fine with this PSU.

The only downside about the Corsair CX750 is its non-modular design. This means that you can not remove any cables from it. After you’ve attached the necessary cables, you’ll have to cable manage the ones that are not in use. 

Overall, for those who are on a tight budget, the Corsair CX750 is a great choice. 

What users say

According to the reviews on Amazon, the CX750 is quiet and delivers good performance. One of the reviewers mentioned: “Very quiet, powers my PC with ease and has all the right cables.”

How to pick the best PSU for this CPU

The power supply is one of the most crucial components of your rig. If you select the wrong one, your components will constantly be at risk. This is why there are a few factors you should consider before making a final purchase.

Power requirements

Before hitting the buy button, first take a look at the total power draw of your rig. For instance, the TDP of the 5800XT is 105W. If you’re pairing it with a GPU like the RTX 4080, which has a TDP of 320W, you’d want to aim for at least a 600W PSU. But to stay on the safe side, consider getting a 750W PSU or something bigger.

Size

Make sure the PSU you’re getting can easily fit inside your case. PSUs come in different sizes, and the standard size is ATX. These are compatible with a wide range of cases. However, if you have a small ITX case, you may want to opt for an SFX PSU, as they are smaller. You can learn more about them through our SFX vs ATX PSUs guide.

Design

If cable management is a big concern for you, then you’d want to opt for a fully modular PSU. These come with their cables detached, and you have complete freedom to connect whichever cable you like. This helps with easily managing the cables, as you don’t have to worry about taking care of the extra ones. However, do keep in mind that a fully modular PSU is more expansive than a non modular unit.

Abdul is a tech writer and Editor for PC Guide, specializing in all things tech, gaming, and hardware.