Best PSU for RTX 4080

Best PSU for RTX 4080 Super: Top power supply picks for 4080

Find the best power supply for 4080 right here and complete your new build

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Table of Contents

Finding the best PSU for the RTX 4080 Super should be a priority and luckily it couldn’t be easier. There is nothing to worry about, you just need a reliable model with enough wattage to power your new PC. High-quality PSUs can see you through several rounds of PC upgrades, often outlasting several GPU generations. Nvidia has recommended PSU specs but we tend to aim a little higher to ensure you get some power headroom – which aids with overall performance and protects your investment for longer.

Recommended RTX 4080 PSU Requirements

NVIDIA specifies a minimum of a 750W PSU for the RTX 4080 and RTX 4080 Super. While this is serviceable for most mid-range PCs, future upgrades from this power supply point may prove challenging. We recommend going a bracket above this and investing in an 850W – and have picked out an appropriate budget PSU for the 4080 at this wattage. A lot of high-quality power supplies feature lengthy 8-10+ year warranties, giving you stable and reliable power for a very long time. This is why it makes a lot of sense to aim for higher wattages if you can afford it.

The sky is the limit with PSUs, however, and before long you could find yourself sinking your wallet into a 1300W power supply unit for a GPU that requires almost just over half that power. We recommend a healthy middle ground between price, quality, and longevity for the best return on your investment.

Best PSU for RTX 4080 Super: Corsair RM1200x Shift

Corsair RM1200x Shift

Wattage

1200W

Efficiency

Gold

Modularity

Fully-modular

ATX 3.0

Yes

Pros
  • Fully Modular
  • ATX 3.0 Compatible
  • Highly effcient and reliable
Cons
  • Expensive

One of our favorite 1200W PSUs available, the Corsair RM1200x SHIFT is sure to keep your PC powered no matter what parts you swap in. The SHIFT range of PSUs from Corsair are not only ATX 3.0 compatible, but also literally “shift” the connection points around the PSU body, along with all the same benefits of the best Corsair PSUs. We highly rate this PSU for 4080 PC builds, as it brings the chances of power supply issues down to an absolute minimum. Though 1200W may seem like overkill for this GPU, the relative price-to-wattage increase means that this 4080 power supply adds terrific value and is guaranteed to future-proof your build. We’re happy to crown the RM1200x SHIFT as our best PSU for the RTX 4080!

Best 1000W PSU for RTX 4080: MSI MPG A1000G

MSI MPG A1000G

Wattage

1000W

Certification

80+ Gold

Modular?

Fully Modular

ATX 3.0

Yes

Pros
  • Efficient & reliable
  • PCIE 5 & ATX 3.0
  • 10-year warranty
Cons
  • Poor cable quality

With 80+ Gold certification packed into a reasonably-priced and fully modular unit, the MSI MPG A1000G is a favorite of ours. Whilst the wattage may still be overkill for a 4080, we think that the A1000G proves that it is worth it, which is why we crowned it the best 1000W PSU. With ATX 3.0 and PCIe 5 support, you will be able to use this power supply for the 4080 and many GPUs beyond it. The A1000G runs near-silently as a 4080 power supply, and whilst the cables that come with the model aren’t of the best quality, they are the only downside to an otherwise fantastic PSU.

Best Budget PSU for RTX 4080: Corsair RM850x

Corsair RM850x

Wattage

850W

Certification

80+ Gold

Modular?

Fully Modular

Not only is the Corsair RM850x an affordable PSU for the 4080, but it’s also one of our picks for the best 850W PSU on the market. Surpassing the 4080 PSU requirements and keeping costs low, the RM850x is a great investment for those wanting an affordable but reliable PSU. Though it isn’t as hyper-cheap as you may expect from a budget PSU, we wouldn’t recommend anything less: this power supply is perfect for providing ample power for the RTX 4080 and beyond without overspending. A healthy marriage of affordability and quality, the RM850x is a good PSU for 4080 PC builds, and a great budget PSU.

Best SFX PSU for RTX 4080 Super: Corsair SF850L

Corsair SF850L

Corsair SF850L

Wattage

850W

Certification

80+ Gold

Modular?

Fully Modular

Pros
  • Quality and relibale power delivery
  • Efficient
Cons
  • No specific cons

Regarded as one of the best SFX power supplies on the market – Corsairs SF range excels. This 850W model is ideal for your new RTX 4080 gaming PC, with enough power and some headroom. Not only is this model efficient but it’s modular and perfect for anyone building a small form factor PC,

FAQs

Is a 1000W PSU enough for the RTX 4080?

Yes: The minimum wattage expected of the RTX 4080 is 750W, so a 1000W PSU for 4080 PCs should be ample headroom – especially if you ever plan on upgrading!

Do I need ATX 3.0 for the RTX 4080?

No, but it is definitely recommended: ATX 3.0 is the latest and greatest technology for power supply in PC builds, meaning that your PSU is able to more efficiently provide power to your GPU. Though ATX 3.0 PSUs can be more expensive, they are a long-term investment.

In Summary

Whether you are building on a budget or looking for a stop-gap between your current PC and a future design, these are the best PSUs for the RTX 4080 Super. As mentioned, these are all above what you specifically need in terms of 4080 power supply requirements, but the extra quality and wattage will pay off in the long term. And with all our choices being hyper-efficient and easy to install, you are spoiled for choice!

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