Best PSU For RX 6600 XT: Top 6600 XT Power Supply Choices

Match or outclass the RX 6600 XT power supply requirements with our top picks!

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AMD have a reputation for creating fantastic graphics processors across the entire spectrum of price and design points, and their RX 6600 XT model is no exception – even if it is of the older generation of GPUs. It can still hold its own in a PC build, especially when paired with the perfect motherboard and power supply – but what is the best PSU for the RX 6600 XT?

If you are building or re-building your PC, and want to answer that question yourself, we’ve got you covered! We’ve put together a buyer’s guide for the best options that match the RX 6600 XT’s PSU requirements, accounting for budgets or specialist needs. Any of these PSUs are sure to super-charge your computer when factored into your build!

RX 6600 XT Power Supply Requirements

The minimum RX 6600 XT PSU requirements specify a wattage of 500W, with 160W of this going towards the GPU itself. This is relatively low, especially by today’s GPU standards, which is not the benefit it initially seems to be. A lower-rated PSU will not be feasible in the long term, which is why we always recommend PC builders – especially first-time PC builders – buy a higher-wattage PSU, as it can last them through several generations of other components. In the modern, upscaled PSU market, it’s also difficult to even find a unit with a wattage as low as the RX 6600 XT minimum PSU – even some of the cheapest PSUs on the market have a higher specification.

Our choices today range from 650W through to 850W, covering the general average for mid-range PCs. There are higher-tier PSUs for the RX 6600 XT, but a 1000W or higher PSU will have no effect on performance and not be worth the extra cost.

Best PSU for RX 6600 XT: Corsair RM850x

Corsair RM850x




80+ Gold


Fully Modular

  • Perfect middle-ground of wattage
  • High efficient
  • Affordable
  • Overkill for some mid-range PCs

Whenever we recommend PSU upgrades for mid-range PCs, we always highlight a Corsair product. The RM850x is a sterling PSU for 6600 XT builds: providing ample power efficiently with a versatile wattage of 850W. With an 80+ Gold rating, this PSU keeps ongoing costs at a minimum and will run near-silently with mid-range PC parts such as the 6600 XT. Though the upfront cost may be slightly above what you’d like to pay, consider the long-term investment in a high-quality PSU. It’s another win for Corsair, as we highly recommend the RM850x as our best PSU for RX 6600 XT PCs!

Best 550W PSU For RX 6600 XT: be quiet! Straight Power 11

be quiet! Straight Power 11 550W




80+ Gold



  • Quiet and efficient PSU
  • Good build quality
  • Bare minimum wattage

For a PSU that just surpasses the RX 6600 XT’s minimum PSU, the Straight Power 11 is a strong contender that keeps things efficient. 80+ Gold-rated and fully modular, this PSU packs a lot of great quality-of-life features into a relatively compact form factor, compensating for its limited wattage with strong build quality. Though this will limit future upgrades quite significantly, the Straight Power 11 is a great low-wattage power supply unit for the RX 6600 XT, especially for those wanting a no-fuss design!

Best Budget PSU For RX 6600 XT: Seasonic FOCUS GX-650

Seasonic FOCUS GX-650

Output wattage



650 watts

Cooling method


Item dimensions L x W x H

14 x 15 x 8.6 centimetres

  • Decent upgrade headroom
  • Efficient PSU
  • Affordable
  • Can overheat in demanding situations

For an affordable PSU that gives you some headroom for future upgrades, look no further than the Seasonic FOCUS GX-650. With a versatile 650W of power, this RX 6600 XT PSU strikes a great middle ground between enough power for your current PC build, and enough for the next one. Another 80+ Gold-rated power supply, you can be assured that neither your money or power will go to waste. For a stripped-back budget PSU, we highly recommend the GX-650!


What is the RX 6600 XT minimum PSU?

The RX 6600 XT has a power supply requirement of at least 500W. GPU manufacturers tend to slightly increase their products’ required wattage for safety, but for performance and longevity we wouldn’t recommend a PSU with wattage lower than 550W.

Is a Gold-rated PSU good?

Yes: Power supply units rate their energy efficiency like medals, meaning that Gold-rated PSUs are some of the most efficient on the market (second only to Platinum). This means your PC has a lower operating cost, and draws only the power it needs with little waste.

In Summary

That rounds off our top picks for the best PSUs for the RX 6600 XT’s power supply requirements! Any of these will serve you well (though we recommend the higher-tier wattages) and keep your PC in good graces – whether you upgrade your parts or not!

If you are planning on upgrading any time soon, we have a host of great buyer’s guides on what to look for in PC parts – check out our guide on the best GPUs under $1000!

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