Buyers Guides PSUs

Best Power Supplies to Buy for the RTX 4080 SUPER

FI_Best PSUs RTX 4080 SUPER

With a high-end graphics card such as NVIDIA’s RTX 4080 SUPER, it is important to provide it with enough power to run all the latest games at 1440p and 4K resolutions. As one of the most power-hungry graphics cards on the market, gamers will need to equip their PC build with a premium power supply containing a high wattage.

But with so many options to choose from, which PSUs are up to the challenge? In this buyers guide, we’ll be showing you our favourites power supplies to pair with the RTX 4080 SUPER, all of which guarantee a reliable and efficient way of keeping your PC build running at its best.

Our Top Pick: DeepCool PX850G

Read on for our full testing, but here’s our quickfire verdict:
PI_Deepcool PX850G Wide

When looking to power the RTX 4080 SUPER, DeepCool’s PX850G is our go-to PSU. With plenty of power to support any mid-range gaming PC, along with gold-rated efficiency and a fully modular design, the PX850G has everything you’d need to keep the RTX 4080 SUPER running at its best. Plus, this PSU is available at a reasonable price point. 

$154.42 at Amazon
Last updated: 2024-06-13 05:45:51 ET

The Best PSUs for RTX 4080 SUPER

1. DeepCool PX850G

MPI_Deepcool PX850G
$154.42 at Amazon
Last updated: 2024-06-13 05:45:51 ET

DeepCool’s PX850G is an excellent 850W power supply that provides a solid blend of price and performance. Whilst sticking to a reasonable price point, this PSU includes a range of features that will allow your system to run in an efficient manner.

For example, the PX850G is equipped with a zero-fan mode, which causes the fan to stop spinning when it isn’t needed. On top of this, the 80 Plus Gold and Cybernetics Gold efficiency ratings indicate that the PX850G will be able to withstand more demanding loads with ease.

Key SpecsDeepCool PX850G
SizeATX
Wattage850W
Efficiency Rating80 Plus Gold
Cybernetics Gold
ModularityFully Modular
ATX 3.0Yes
Fan Size135mm
PSU Length160mm
Zero-Fan ModeYes

In terms of design, the full modularity allows for greater flexibility when plugging in components. Plus, the 12VHPWR connector is highlighted in cyan, making it easier to connect your RTX 4080 SUPER graphics card.

The biggest downside of this PSU is the increased price tag compared to other 850W options on the market. But when you consider what the PX850G brings to the table, this additional price seems like a worthy investment.

Pros

Cons

2. Cooler Master V850 i Gold

MPI_Cooler Master V850 i Gold

There are a number of 80 Plus Gold rated power supplies on the market, but Cooler Master’s V850 i Gold is amongst the few options that can support the demands of NVIDIA’s RTX 4080 SUPER with ease. But what makes this PSU truly stand out from the crowd is the digital platform.

The semi-digital nature of this power supply allows you to connect it directly to the motherboard via USB, which unlocks some unique customisation options. With the help of Cooler Master’s MasterPlus+ software, the performance of this PSU can be monitored and adjusted to meet your demands.

Key SpecsCooler Master V850 i Gold
SizeATX
Wattage850W
Efficiency Rating80 Plus Gold
ModularityFully Modular
ATX 3.0Yes
Fan Size135mm
PSU Length160mm
Zero-Fan ModeNo

Other notable features include a fully modular design for improved cable management, as well as ATX 3.0 compatibility, which allows RTX 4080 SUPER gamers to use a single connector for their cable.

Whilst the digital integration included in this power supply, the supporting MasterPlus+ software isn’t the most intuitive. As a result, the execution of the real-time monitoring and data analysis isn’t as useful as intended.

Pros

Cons

3. be quiet! Straight Power 12

MPI_be quiet! Straight Power 12 1000W

If you’re looking to build a gaming PC filled with the RTX 4080 SUPER and other power-hungry components, then a 1000W power supply such as the be quiet! Straight Power 12 is a safe bet. This design is targeted towards high-end gaming PCs, offering premium performance and features without having to break the bank.

Like the 850W PSUs featured earlier, the Straight Power is a fully modular design that includes ATX 3.0, allowing PC builders to minimalise clutter for improved cable management. However, the impressive 80 Plus Platinum efficiency rating means you can expect this PSU to remain almost silent in most scenarios.

Key Specsbe quiet! Straight Power 12
SizeATX
Wattage1000W
Efficiency Rating80 Plus Platinum
ModularityFully Modular
ATX 3.0Yes
Fan Size135mm
PSU Length160mm
Zero-Fan ModeNo

Unfortunately, the increase in power and efficiency does result in a lofty price tag. Whilst it is hard to find similar specs for cheaper, a PSU with a lower wattage and efficicncy will be able to manage the demands of most RTX 4080 SUPER PC builds.

Another sticking point for this design is the lack of a zero-fan mode. From a sound perspective, this isn’t much of an issues, due to the near-silent design of the Straight Power 12. However, having the 135mm fan running at all times will impact the longevity of this power supply.

Pros

Cons

4. Corsair HX1000i

MPI_Corsair HX1000i
$234.99 at Amazon
Last updated: 2024-06-13 05:45:51 ET

For a RTX 4080 SUPER PC build aimed at high-end 4K gaming, the Corsair HX1000i is an extremely strong power supply to consider. This ATX 3.0 PSU can handle the demands of this graphics card, whilst catering for plenty of upgrades.

With a large 140mm fan and a zero-fan mode, the HX1000i ensures that your system is powered sufficiently while remaining cool and quiet. Because of this, the HX100i has been awarded an 80 Plus Paltinum and Cybernetics Platinum efficiency rating, as well as a Cybernetics A rating for noise levels.

Key SpecsCorsair HX1000i
SizeATX
Wattage1000W
Efficiency Rating80 Plus Platinum
Cybernetics Platinum
ModularityFully Modular
ATX 3.0Yes
Fan Size140mm
PSU Length180mm
Zero-Fan ModeYes

In terms of design, the HX1000i is fully modular, allowing builders to pick and choose which cables are connected to avoid clutter and confusion during the installation process. However, this PSU is larger than most designs, which could cause some clearance issues in smaller PC cases.

Pros

Cons

How We Test the Best PSUs for RTX 4080 SUPER

When selecting the best power supplies to pick up for the RTX 4080 SUPER, there are a number of testing procedures used to slim down our recommendations. After checking the power requirements for the RTX 4080 SUPER, we evaluate a range of products, using various factors to determine which PSUs are best to pair up with this graphics cards. These factors include:

  • Wattage
  • Size
  • Efficiency rating
  • Noise levels
  • Modularity
  • ATX 3.0 compatibility

Frequently Asked Questions

What are the RTX 4080 SUPER Power Requirements?

NVIDIA suggest a minimum PSU of 750W, but we’d recommend picking up at least 850W.

How Much Power Does a RTX 4080 SUPER use?

The total power consumption of the RTX 4080 SUPER is 320 Watts, which is the same as the RTX 4080.

Do I Need ATX 3.0 for the RTX 4080 SUPER?

No, but the ability to connect to RTX 4000 GPUs via a single cable is very useful.

editor
Aled Wheeler is part of our technical writing and reviews team, focussing on PC components, console gaming and peripherals such as keyboards and monitors! With a degree in journalism and experience working for publications in the sports and gaming sectors. Aled is our in-house news and gaming writer, with his finger on the pulse of game devs around the world. Aled is currently rocking a solid mid-range gaming PC build, with a Ryzen 5000 processor and RTX 30 series graphics card.