Best PSUs for RTX 3080 in 2022

Guide to PSU for RTX 3000 Series GPUS

The Nvidia RTX 3080 is a powerful graphics card to have on your computer. And to make the RTX 3080 perform at its best, you’ll need a good power supply. Nvidia claims that you should have at least 750W PSU to run RTX 3080 but the reality is totally different from this. This graphics card will not draw more than half the amount of power out of a 750W PSU. The truth is, you can get away with a 650W power as well. So, there is no need to put a hole in your wallet to get the best power supply for RTX 3080 graphics card.

In the meanwhile, if you have tons of power-hungry peripherals connected to your motherboard, then going with a high wattage makes sense. But if you just need a power supply to fuel your Nvidia RTX 3080, then you have a lot of options available on the market to choose from.

Underpowered or older power supplies can pose a threat to your newly bought RTX 3000 Series card. So, it’s better to opt for a reliable PSU brand to avoid any system crashes or instability issues. In this guide, we’ll list highly compatible power supply units for RTX 3080 and 3080 Ti.

Power Requirements of Nvidia RTX 3080 Graphics Card

  • TDP: 320W
  • Recommended PSU Wattage: 700W
  • External Power Connector: x1 12-pin

The Best Power Supply for Nvidia RTX 3080 Graphics Card

Below are the most efficient and reliable options to go with:

Cooler Master Semifanless – Overall Best Power Supply for RTX 3080 & 3080 Ti

Key Specs:

Wattage: 650W | Form Factor: ATX | Design: Semi-Modular | Efficiency: 80 Plus Bronze | Warranty: 5 Years

power supply for rtx 3080

The Cooler Master 650W is the most affordable gaming power supply to fuel RTX 3000 graphics cards. Its semi-modular design and 80 Plus Bronze efficiency make it a reliable option for low-budget gaming PCs.

The most praising feature of this unit is the semi-fanless mode, which keeps the fan inaudible under 15% workload. So if you are just surfing the internet or dealing with general computing tasks, you won’t hear the fan noise at all. At 50% peak load, the noise level of this PSU is 14 dBA.

This power supply from Cooler Master comes with a Silencio FP fan with an LDB bearing and a dustproof IPX6 rating. Also, the life span of the fan is expected up to 160,000 hours. On top of that, the Dual forward / DC-to-DC topology ensures stable voltage under heavy workloads.

Right out of the box, you get access to 6AWG PCI-e high-quality cables to power up your RTX 3080 graphics card. These are the most durable power cables with less resistance and higher efficiency.

The RTX 3080 needs an x1 12-pin power connector, but with this PSU you only get only x4 PCI-e 6+2 Pin connectors. So you will need to buy an extra 6-pin to 12-pin power PCIe converter to power up your GPU.

Overall, this PSU is equipped with all the protection features, a durable fan, 5 years of warranty, and higher efficiency to deal with RTX 3000 Series graphics cards.

If you don’t have other power-hungry hardware installed on your computer, then this low-budget PSU is more than enough to run your RTX 3080 without any issue.

RELATED: The Best Power Supply of the Year 2022

EVGA SuperNOVA 750 P2 – A Reliable Power Supply for RTX 3080 & 3080 Ti

Key Specs:

Wattage: 750W | Form Factor: ATX | Design: Full Modular | Efficiency: 80 Plus Platinum | Warranty: 10 Years

good psu for rtx 3080 ti

The EVGA SuperNOVA 750 P2 is fully modular and has an 80+ Platinium efficiency to handle the most power-hungry GPUs from Nvidia and AMD. It’s a fully modular power supply with an ideal price to performance ratio.

Comparing this PSU with the Cooler Master 650W, the EVGA SuperNOVA 750 P2 is up to 92% efficient in performance. Also, the fully modular design of this power supply ensures better cable management and gives a cleaner look to your PC.

EVGA has used high-quality Japanese capacitors to increase the lifespan of this unit. Also, there’s a 140mm double ball-bearing fan for silent operation under heavy workloads.

Now EVGA itself is a reliable brand and if you opt for this power supply you won’t need to upgrade to a new one for at least years. There are 10 years of warranty with this PSU to give you peace of mind. In the box, you get x2 EPS and x6 PCIe power cables just like the 850 P2 model.

The PCIe connectors however are only 6-pin ones, so you have to buy a 6-pin to 12-pin PCIe power pin converter to connect this PSU with RTX 3080 GPU. In most cases, the 12-pin power adapter is included in the graphics card box.

The SuperNOVA 750 P2 comes with low voltage ripple and response time as compared to Bronze-rated power supplies in the market. It’s a solidly built power supply to fuel high-end graphics cards like RTX 3080 and 3080 Ti.

With quality caps, better ripple suppression, load regulation, and semi-passive operation, the SuperNOVA 750 P2 deliver the right amount of power backup for RTX 3000 Series graphics cards.

Corsair RM750x – Highly-Efficient Power Supply for RTX 3000 Series Cards

Key Specs:

Wattage: 750W | Form Factor: ATX | Design: Full Modular | Efficiency: 80 Plus Gold | Warranty: 10 Years

efficient PSU from Corsair to power up RTX graphics cards

No doubt, the Corsair RMx series has been a hot discussion in the PC gaming community these days. Not only PSUs in the RMx line-up are excellent in performance, but they also deliver the right value for the money. The Corsair RM750x is the most cutting-edge power supply to handle high-end GPUs like RTX 3080.

It’s a fully modular power supply built with high-quality caps to deliver 80 Plus Gold efficiency. This power supply consumes less power to deliver the higher output to your PC.

Instead of using a double ball bearing, Corsair has introduced a Rifle Bearing fan that operates silently under peak loads. The Zero RPM modes make this power supply super silent at normal to medium workloads.

The Corsair RM750x is a great improvement over the previous power supply units from the company. It’s hard to find 80 Plus Gold-rated PSUs in such an affordable price range.

This unit comes with two EPS connectors to meet the high-power demands of your computer. However, like the EVGA SuperNOVA 750 P2 that has x6 PCIe connectors in the box, this PSU only has x4 PCIe connectors.

The most noticeable thing about Corsair RM750x PSU is its compact dimensions. This means you can easily fit this power supply inside the case where there is limited space.

If you have just upgraded to a graphics card like the RTX 3060, 3070, or 3080, then it’s better to go with PSU to square the performance equation. It’s fully modular, it’s super quiet, has all the necessary power connections, and has a long-lasting warranty.

EVGA Super Nova 850 G5 – High-End Power Supply for High-End RTX GPUs

Key Specs:

Wattage: 850W | Form Factor: ATX | Design: Full Modular | Efficiency: 80 Plus Gold | Warranty: 10 Years

ideal powerful for power hungry GPUs

The EVGA SuperNova 850 G5 sits in the range of top-of-the-line power supplies from EVGA, and it definitely deserves to be among the best PSUs for RTX 3080. As compared to the SuperNova 750 P2 power supply, this G5 model holds more wattage, a high-end 80 Plus Gold rating, and better thermal management under peak loads.

This is a fully modular power supply with high-end capacitors and a 135mm Fluid dynamic fan for super silent operation. There’s Eco Mode on this PSU that turns off the fan when there is no load.

This power supply is sufficient enough to power a gaming CPU like Core i9 9900K along with an RTX 3080 Ti GPU. Not only RTX 3080, but you could also power an RTX 3090 with this power supply as well.

This high-end power supply costs a few more bucks as compared to the Corsair RM750x PSU on our list. By just paying $20 to $30 more, you get a high-wattage power supply that is well-built and has the same 10 years of warranty.

The SuperNova 850 G5 achieves a better performance score than its competitor PSUs from Corsair and Seasonic. The power supply comes with x2 EPS cables and x6 PCIe cables to connect different types of hardware. Also, there are x4 4-pin and x9 SATA cables in the box as well.

As Nvidia has suggested the minimum power supply requirements for Nvidia RTX 3080 are around 700W to 750W, the SuperNova 850 G5 gives you more headroom for wattage here. With 850W and 80 Plus Gold efficiency, SuperNova 850 G5 has enough power to run your RTX 3080 even if you overclock it.

Thermaltake Smart BX1 RGB – The Cheapest PSU to Have for RTX 3000 Series Cards

Key Specs:

Wattage: 650W | Form Factor: ATX | Design: Non Modular | Efficiency: 80 Plus Brozne | Warranty: 5 Years

Brone 650W psu for rtx graphics cards

The Thermaltake Smart BX1 RGB gives your PC case a stunning look with its vibrant RGB fan light coming out of the top. Although it’s a non-module power supply which means you’ll have to tie the extra cables, it’s cheaper and delivers the almost same type of performance you could expect from other PSUs on the list.

The RGB fan on the Thermaltake Smart BX1 is dead silent and makes no noise at all even under peak load times. RGB lights are non-addressable, but there’s a button on the unit to change the colours.

The 80+ Bronze rating on this unit at least gives you some sense of security to buy it for power higher-end RTX 3000 series cards. Where other units on our list hold better efficiency ratings, the Thermaltake Smart BX1 sits at the bare minimum efficiency rating you should look for in a power supply.

Overall, it’s a well-built power supply and would be enough to fuel your RTX 3080 graphics card. It comes with all the necessary PCIe connectors that you need to power up high-end graphics cards sailing in the market.

The length of connectivity cables that come with this PSU is enough to reach any end of your ATX PC case without making any modifications. Moreover, there are added 5 years of warranty from Thermaltake to replace the unit if any goes wrong with it.


So these were the best PSUs for Nvidia RTX 3080 on the list. We highly recommend you to go with Corsair RM750x or EVGA SuperNova 750 P2 to deliver uninterrupted power to your graphics card. Both of these PSUs come at an affordable price and would be good enough to meet your power needs even if you upgrade from RTX 3080 to any other higher model GPU.

How We Tested

Our process to test products is simple, we either buy a product or visit a PC vendor shop to inquire more about it. In our performance test, we make sure the product performs up to our expectations. Like in this guide we’ve mentioned the best power supplies to run an RTX 3080 graphics card.

So, we’ve some of these PSUs with and without load on an RTX 3080 GPU. There are a few things that we always look for while testing a product like performance, efficiency, and price. We make sure we list only those products that give our readers the most value.

Factors to Look at When Choosing a PSU for RTX-Based GPU

When there are a lot of PSU brands competing in the market, it becomes a bit difficult for newbies to get their hands on the right product. So we’ve listed some crucial factors before purchasing any PSU.

Power Consumption

Obviously, an RTX 3080 or even other cards in the RTX 30-Series draw over 300W of power. Nvidia suggests having a 650W PSU to run RTX 3080 GPU.

However, to be on the safe side, it’s better to go with slightly a higher number. So, a 700W or 750W could be a great deal to go with.

Going after a high-wattage PSU not only gives you enough headroom to overclock your hardware, but it also makes your PC future-proof as well. At the end of the day, it’s not just the Wattage that matters in a power supply but also the Efficiency as well.


It’s an extremely important factor to keep in mind whenever you buy a PSU. Most PSUs are rated with Bronze, Silver, Gold, Platinum, and Titanium rating. This represents how reliable and long-lasting a power supply is as a whole.

PSU Load80 Plus80 Plus Bronze80 Plus Silver80 Plus Gold80 Plus Platinum80 Plus Titanium
At 20% Workload80%82%85%87%90%92%
At 50% Workload80%85%88%90%92%94%
At 100% Workload80%82%85%87%89%90%
PSU Efficiency Rating Table

Quick Tip: If you are confused about the efficiency rating on a power supply, then always go with the one that comes with “80 Plus Gold Rating” to get the most price to performance ratio.

Power Connectors

High-end cards in the RTX 30-Series like the RTX 3080 and 3090 need a 12-pin power connector to run properly. It’s hard to find a 12-pin direct power connector in most power supplies, so you can use a 6 or 8-pin to 12-pin power converter as well.


What Are 3080 PSU Requirements?

The RTX 3080 and 3080Ti both have a power draw of around 350 watts. But, if you are building a good gaming computer, then the ideal power supply for this unit should be somewhere between 850 and 900 watts.

Is 850w PSU Good for 3080?

Yes, an 850W power supply can easily run an RTX 3080 graphics card under peak load. However, such a high-wattage PSU could be overkill for such a card. Unless you have a lot of peripherals attached to your PC along with an RTX 3080 card, a 750W PSU could do your job.

How Many Watts Does a 3080 Use?

An RTX 3080 uses somewhere around 320W to 370W under full load.

Can We Use an Expensive Power Supply for the RTX 3080?

To be honest, there is no need to invest piles of cash in buying an expensive power supply to just run an RTX 3080. All you need is to pick a power supply that meets the power demands of an RTX 3080 graphics card, your CPU, and the rest of the components inside your system.

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