Best Power Supply Unit (PSU) For Nvidia RTX 3090, 3080, And 3070 GPU

Nvidia is a known player in the graphics industry. This year the company announced its premium level RTX 30 series GPU. The new RTX 30 series includes Nvidia RTX 3090, 3080, and 3070 GPUs. They are already up for sale and getting rave reviews about its performance. However, despite being designed on the new efficient chip, all the Nvidia RTX 30 series GPUs will be power-hungry, meaning that you need to supply sufficient power to get them going.

Talking about some numbers, RTX 3070 has the same TDP as its predecessor, the RTX 2070 Super. But, the RTX 3080 and 3090, go above and over the power requirements of the flagship RTX 2080 Ti. And combining any of these Nvidia RTX 30 series GPU with power-hungry CPU such as the Core i9-10900K or the Ryzen 9 3950X, you get yourself a gaming PC that needs move than 500 Watts of power. So, in this post, we will give you the best PSU or Power Supply Units that you can get for the Nvidia RTX 3090, 3080, and 3070 GPUs. With that being said, let us get straight into the article itself:

Best Power Supply Unit (PSU) For Nvidia RTX 3090, 3080, And 3070 GPU

We will take a look at the best PSU or power supply units for the Nvidia RTX 30 series GPUs, one by one. So, you can check the different sections as per your convenience and jump straight to the best PSU section for the GPU that you currently own. Let us take a look at the best PSUs that you can get and should get for the Nvidia RTX 3090, 3080, and 3070 GPUs.

Best Power Supply Unit (PSU) For Nvidia RTX 3090

Talking about the Nvidia RTX 3090, it comes with 24GB of GDDR6X memory and a base TDP of 350W. Meaning that when you combine with a powerful Core i9-10900K or the Ryzen 9 3950X PC, you would require a pretty powerful PSU.

Corsair AX 850 Titanium:

If you do not want to compromise on anything and want a full-out powerhouse PC around Nvidia RTX 3090, then you need a PSU that you can rely on. And here comes the Corsair AX 850 Titanium. The PSU is capable of running power-hungry components with overclocks. This Corsair AX 850 applies the best of the best power supply mechanism to justify its hefty price.

corsair ax850 rtx 3090

The capacitors are 100% Japanese, it has a 135mm fan with zero fan mode for silent operation and it supplies power to 850W. This PSU comes with 3 PCIe Cables and a pair of 8 Pin EPS cables. Moreover, users can go ahead with the Corsair custom cables for manufacturer guaranteed customization options. On top of all of this, it also has a ten-year warranty. So, you do not need to worry about your PSU until 2030.

EVGA SuperNOVA P2 750

If you are searching for a reliable yet efficient PSU for RTX 3090 then, EVGA SuperNOVA P2 750 is the one to go for. It has an 80 Plus Platinum efficiency rating, meaning brilliant performance at a 50% load. It is fully modular, this negates the need for unnecessary cables that you do not need.

EVGA SuperNOVA P2 750 rtx 3090

It comes with a 10-year warranty and hits the top power supply at 750W. EVGA SuperNOVA P2 750 comes with an ECO Control Fan system. This means zero fan noise during low to medium load operations. It also houses 100% Japanese capacitors for unbeatable performance.

Corsair AX1600i or EVGA Supernova 1600 P2

We have a tie here. If you want to totally overkill your PC and want the best of the best and the premium from the rest, then you should go for either Corsair AX1600i or EVGA Supernova 1600 P2. We have locked on these two PSUs considering that if you have RTX 3090, there is no shortage of money.

Talking about the Corsair AX1600i, it is the ultimate digital ATX PSU that has been developed using the state of the art gallium nitride transistors to deliver more than 94% efficiency. It produces an output of staggering 1600W and has 140mm size fans. The Corsair AX1600i uses Fluid Dynamic Bearing fan bearing technology and is fully modular.

corsair ax1600i rtx 3090

Now coming to the EVGA Supernova 1600 P2, it is a full powerhouse of a PSU generating 1600W of output. The modular nature of the PSU allows for reduced clutter and improve airflow. The PSU uses 100% Japanese Capacitors to ensure long-term reliability and has a fan Size of 140mm. Notably, it makes use of the Double Ball Bearing as a part of the fan bearing technology. It also comes with a 10-year warranty.

EVGA Supernova 1600 P2 nvidia rtx3090

Best Power Supply Unit (PSU) For Nvidia RTX 3080

Nvidia RTX 3080 can run fine with any PSU producing around 600W of output. You can also use this configuration with an overclocked Core i9-10900K CPU. However, it is not recommended to use a 600W output in the long run. You should look beyond 600W and below is the list.

Seasonic PRIME Ultra 650W 80 PLUS Titanium

If you decide to go for the 600-650W PSU, then the best premium PSU out there for the Nvidia RTX 3080 is the Seasonic PRIME Ultra 650W 80 PLUS Titanium. It has the capability to keep the output voltage under the range and deliver optimum performance.

Seasonic PRIME Ultra 650W 80 PLUS Titanium nvidia rtx 3080

Moreover, it makes use of an innovative circuit design to minimize sound output. The design is also a cable-free meaning reduction in clutter. So, if you want to stay in the tight range of 600-650W then you should go for the Seasonic PRIME Ultra 650W 80 PLUS Titanium.

Corsair HX750i

Our advice would be to play it safe and up the output voltage to around 750W. And for that, you can rely on the Corsair HX750i PSU. It runs cooler, smoother, and quiet. It is less power and is more power-efficient than many other PSUs available in the market.

Corsair HX750i

The PSU is fully modular and comes with a 10-year warranty bracket. The size of the fan is 140mm FDB fan with Zero RPM mode. There are reliable 100% Japanese 105°C capacitors and the company touts it to be Zero RPM or ultra-low noise PSU. The good thing is that using its +12V Rail Switch, users can use a single +12V rail or multiple +12V rails.

Thermaltake Toughpower GF1

If you wish to overkill and match your RTX 3080 with an 850W PSU, then our pick would be the Thermaltake Toughpower GF1 850W. It is more affordable than other PSU for 850W output.

Thermaltake Toughpower GF1

The features of the Thermaltake Toughpower GF1 850W includes Ultra-quiet 140mm Hydraulic Bearing Fan, 100% Japanese capacitors, lower than 30 mV low ripple noise, zero cables and fully modular, less power consuming, etc. These are some excellent specs for the price and the output that you are getting.

Best Power Supply Unit (PSU) For Nvidia RTX 3070

Nvidia RTX 3070 could run won a total output power of 220W. So, any PSU of about 650W power is sufficient for running your RTX 3070. Moreover, the official website of Nvidia RTX 3070 also mentions the same power output delivery PSU for using this GPU.


The EVGA 500 GD is our pick for the budget 500W PSU. It has a single 12V rail and has 90% efficiency under typical loads. The EVGA 500 GD comes with 5-year EVGA support. The use of Japanese capacitors also ensures high-performance gaming under variable loads.


Besides, this PSU also covers your circuits with different protections like Heavy-duty protections, including OVP (Over Voltage Protection), UVP (Under Voltage Protection), OCP (Over current protection), OPP (Over Power Protection), and SCP (short circuit protection).

Corsair CX Series 550 Watt

If you wat 550W output delivery then, Corsair CX Series 550 Watt is your best bet. This semi-modular PSU for the Nvidia RTX 3070 produces a power output of 550W and supports ATX12V 2.4/2.3/2.2/2.01 and EPS12V 2.92 standards. The fans are thermally controlled meaning silent operation under low and medium loads.

Corsair CX Series 550 Watt

The fan size is 4.72 inches. The Corsair CX Series 550 Watt comes with a 5-year warranty. It has Auto-switching circuitry that provides universal AC input from 100V – 240V and the installation of the PSU is also very easy. The black design also gives it a premium appeal.

Seasonic FOCUS PX-650

If you want a high-end and 650W power delivery output PSU then, you can go for the Seasonic FOCUS PX-650. It has a 140mm fan size that will fit any ATX systems. The Seasonic FOCUS PX-650 is fully customizable and modular. The 80 PLUS PLATINUM guarantees less energy wastage.

Seasonic FOCUS PX-650

There is a 10-year worry-free warranty as well. The hybrid fan-control is one of the features of this PSU which makes less noise and allows for customizable fan speeds at variable loads. For 650W output and a decent price, the Seasonic FOCUS PX-650 should be your pick for RTX 3070.

Wrap Up!

So, there you have it from my side in this post. I hope you guys liked our picks for the PSUs for Nvidia RTX 3090, 3080, and 3070 GPUs. There are other PSUs available at different price points which you can also look after on various e-commerce websites. Let us know in the comments below if you have something better PSU for any of the Nvidia RTX 30 series GPUs.

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