Best PSU for RTX 3080: Find the Ideal 3080 Power Supply

Match or surpass the RTX 3080 minimum PSU with our buyer’s guide!

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Though there are many options on the market, finding the best PSU for RTX 3080 PC builds is surprisingly straightforward: matching the RTX 3080 minimum PSU requirements is fairly easy, and the best power supply units are all quite standard. If you are starting your very first PC build, or are reconfiguring an older one, then you’ve come to the right place – as we break down the best power supply choices for 3080 PC builds!

Bear in mind that our lists are general-purpose PSUs: NVIDIA and other GPU manufacturers recommend certain catch-all power supply specifications based on average PC power draws with that particular graphics card. The RTX 3080 minimum PSU may not be suitable for your specific build, so be sure to double-check your requirements before buying using a PSU calculator.

RTX 3080 PSU Requirements

Like its sibling, the RTX 3080 Ti, NVIDIA recommends a 750W PSU for the 3080, with approximately 350W of that wattage dedicated to power the GPU exclusively. This is the minimum specification, however, and we always recommend investing in a higher-wattage unit. Most of our power supply choices today are all 850W or higher: a healthy balance of the PSU requirements and future-proofing PC builds to come.

Best PSU for RTX 3080: Corsair RM1000x

Corsair RM1000x

Corsair RM1000x 80 PLUS Gold Fully Modular ATX 1000 Watt Power Supply







ATX 3.0


  • Surpasses the RTX 3080 minimum PSU
  • Highly efficient
  • No ATX 3.0 support

One of our favorite Corsair PSUs, the RM1000x is a stellar 3080 power supply that assuredly safeguards your PC has reliable power supply for all components, all the time. Packing 1000W of power, the RM1000x is the ideal future-proofing PSU. The module also has a 135mm fan for effective cooling – though most RTX 3080 PCs shouldn’t need it. If we had to point out one flaw in the RM1000x’s design, it would be the lack of ATX 3.0 compatibility: the next generation of PC parts rely on ATX 3.0, so its lack of inclusion here may limit its longevity. In the meantime, however, this 1000W powerhouse is the perfect PSU for the RTX 3080!

Best Efficient PSU for RTX 3080: EVGA SuperNOVA T2

EVGA SuperNOVA 850W T2




80+ Titanium



  • Ideal wattage
  • Hyper-efficient PSU
  • Expensive

For those after the most efficient PSU for their PC, the EVGA SuperNOVA T2 is an energy-saving beast. An 80+ Titanium rating is hard-earned, and the T2 puts it to good use. With 850W of power supply, it matches our RTX 3080 minimum PSU and saves you money in the long term. On top of all this, the T2 also has heavy-duty protection to prevent overheating and a fully modular design for easy installation. Though the model may be more expensive than other on the market, it pays for itself in longevity – we highly recommend the T2 as a top-quality 3080 power supply!

Best Budget PSU for RTX 3080: Thermaltake Toughpower GF2

Thermaltake Toughpower GF2




80+ Gold



  • Great value PSU
  • Energy efficient
  • Semi-modular design
  • Minimal wattage for 3080 PCs

If all you need is a barebones budget PSU with a price that hovers below the $100 mark, the Thermaltake Toughpower GF2 is the ideal power supply. At 750W, it manages to match the RTX 3080 minimum PSU whilst also boasting 80+ Gold certification and in a conveniently priced bundle. Though an only semi-modular design may make installation and cable management more difficult, the affordability versus quality on display is unmatched. For the right wattage and unrivalled value, we recommend the GF2 as the best budget power supply for RTX 3080 PCs!

Best 850W PSU for RTX 3080: Corsair RM850x

Corsair RM850x




80+ Gold


Fully Modular

  • Ideal wattage
  • Great value for money
  • Poor cable quality

At a middle ground between our favorite features – wattage, efficiency and value – sits the Corsair RM850x. One of the very best 850W PSUs, this affordable module provides ample power in a versatile package. Fully modular and with an 80+ Gold efficiency rating, this PSU starts as it means to go on: being easy to use at minimal expense. Though the cable quality can vary from model to model, the RM850x itself is sturdy, running smoothly and near-silently even under strain. Corsair delivered another fantastic power supply unit for 3080 PCs with the RM850x, and we highly recommend it as an RTX 3080 power supply!


Can I use a 650W PSU with RTX 3080?

No: The RTX 3080 draws between 320 and 350W of power, so a 750W PSU is the minimum recommended wattage. Some PCs with lower-wattage components may be able to run the 3080 on less, but it is always worth investing in a more powerful PSU to begin with.

What does a fully modular PSU do?

A fully modular PSU does not seal its components together, meaning that they can be quickly detached and rearranged. For building a custom PC, this is especially valuable as it makes for quick and easy cable management and installation.

In Summary

That wraps up our list of the best PSUs for RTX 3080 PC builds! Regardless of your particular PC build requirements, we hope you found what you were looking for to pair with your GPU! We have plenty of PSU buyer’s guides, so if you didn’t find what you were looking for today, be sure to check them out!

To truly supersize your PSU for years to come, there are plenty of ultra-high-wattage PSUs available – check out our guide on some of the best 1600W PSUs!

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