The 5 Best PSU for RTX 4080 Reviews

We’ll start the list with a product from a well-known company. EVGA has always dished out quality products in the market and they get a high rating from the community due to their quality, performance, and durability.

The EVGA SuperNOVA 1000 GT, 80 Plus Gold 1000W has all the specs and features you would need to power a high-end build where components run in extreme conditions. The 1000W capacity is more than enough to fulfill the power demands of a build featuring an RTX 4080 with an overclocked Ryzen or Intel CPU with headroom to spare.

The PSU comes with Japanese capacitors and is fully modular so you will be using only the cables that are needed making for better cable management in your case. It is an 80-plus gold PSU which means that your input will be 90% efficient. It also comes with a single +12V output which makes it compatible with the latest GPUs and hardware. The optimal operating temperature of the PSU is 0-50c and to keep things cool it comes with a 135mm fluid dynamic bearing which will help keep the temps down. It also comes with the proprietary EVGA ECO Intelligent control system which keeps the fan noise at reduced levels.

It comes with several protective systems such as OVP (Over Voltage Protection), UVP (Under Voltage Protection), OCP (Over Current Protection), OPP (Over Power Protection), SCP (Short Circuit Protection), and Dual OTP (Over Temperature Protection) making it the ideal PSU for running a PC which requires a large amount of power input. Moreover, it comes with a 10-year warranty and the customer support is just a plus for you that will make investing in this PSU worthwhile.


Next up we have got a PSU from another well-known brand, Corsair. The RMx product series by Corsair has a lot of positive reviews from the community and this is why they have made it to our list of the best PSU for RTX 4080.

The Corsair RMx Series (2021), RM850x, 850 Watt, GOLD is a fully modular PSU coming with black-sleeved cables so your high-end PC containing an RTX 4080 with an overclocked Ryzen or Intel Processor can be powered without any hiccups in the power delivery department. To keep things cool the PSU comes with magnetic levitation cooling fans to keep things keep cool and running at an extreme level.

Since it’s a Gold-rated PSU it has a running efficiency of more than 90%. Due to the ball bearings present in the cooling fan, the PSU runs cooler and also doesn’t make a lot of noise making for very good acoustics in the PC case, although even if they did make a lot of noise, the headphones would cancel the sound out, but hey the less noisy the better.

The PSU contains multiple EPS12V connectors making it compatible with the latest GPUs even the upcoming RTX 4080 which is starting to become available to reviewers and hopefully will be seen on shelves in shops as well. It even contains the 12 GPU power cable for the newer GPUs. Furthermore, the fan of the PSU comes with a Zero RPM mode ensuring silent operation when the PC is running in idle or non-OC mode. But when the hardware requires power, the fan starts up to keep the PC cool and quiet so it can keep running optimally.

The PSU also comes with Japanese capacitors which can function at 105c and an efficient DC-DC conversion helping the PC wake up from sleep in a very quick manner. The rails present on board are capable of drawing 70.8A current at 12V and give out a max output of 849W.

In the aesthetics department, the PSU supports a large variety of Corsair accessories such as individually sleeved cables, 12VO motherboard cables, and 12-pin micro-fit GPU cables making it a versatile PSU that gets the job done and also adds to the aesthetic makeup of your PC build.


For our next product, I have got a PSU that is designed for PC enthusiasts who want a PSU that belongs to the premium category of products and comes with all the latest features they would need to fulfill the power requirements of a high-end PC that makes them belong to the top end of the community.

The Thermaltake Toughpower GF1 850W 80+ Gold comes with a 140 mm Hydraulic Bearing Fan that will keep things running cool and quiet. It is a fully modular PSU that comes with a very durable chassis that comes with low Profile flat cables in the color black. Originally this PSU was designed for running an SLI/Crossfire setup but modern GPUs have become quite power-hungry it has more than enough horsepower under the hood to power a modern-day GPU belonging to the latest series such as the 40 series.

The fan comes with an Anti-vibration Mounting system and concentrated compression fan blades for maximum airflow. The airflow is further enhanced by the Side ventilation Design of the chassis. The presence of high-quality Japanese capacitors ensures that your system gets the power input it requires when it is running in extreme conditions. The DC-to-DC design conversion makes sure that your system is getting stable and continuous voltage when running resource-intensive apps or games.

If we talk about the noise profile of the fan, it’s a hydraulic fan and it comes with a smart zero fan feature that lets the fan run in zero RPM mode when the system is running in idle mode and when the PC is running in extreme or OC conditions the fan doesn’t cross the 30-decibel mark making for quiet operation.

The PSU meets the highest voltage regulation demands as the standard set by Intel is 5% tolerance and the PSU comes with 2% tolerance for voltage regulation making for very stable power delivery. The PSU is capable of delivering 850.8W with an output current of 70.9A and 12V as the DC output making for a premium Power supply unit that will easily power a system running an RTX 4080.


When giving out PC component recommendations, the list feels incomplete without an entry from the ROG product lineup which has been designed to cater to the enthusiast sector of the PC community who won’t settle for anything but the best.

The ASUS ROG STRIX 1000W Gold PSU, Power Supply comes with ROG heatsinks, double ball fan bearings, and an Axial tech fan design to keep things cool and running in optimal conditions. These components and features are there since ROG’s focus is on keeping the components cooler by maximizing airflow and heat dissipation to prolong the life of the components.

When the TDP of the PC is below 40% the 0dB technology comes into effect for silent operation. The PSU is a fully modular PSU that comes with 24-pin, 6+2-pin PCI-e, and 8-pin CPU cables containing capacitors that will work to reduce any voltage ripple. Moreover, these cables will help you achieve a clean-looking PC as well. The 1000w capacity is more than capable of running a high-end system with an RTX 4080 and the top-end processors like the Ryzen 7950X or the Intel 13900K which have got massive TDPs on their own, but the PSU has the juice to handle the whole system with RGB and AIOs running in.

If you’re going for a ROG build the PSU will fully shine in that system as it already has the power and performance, but with a ROG build it will sync up with the rest of the build as it comes with a magnetic logo and stickers to add to the aesthetic value of your PC build.

The efficiency of the PSU is 80+ gold and it can output 996W at 83 A at 12V on the rails. Since it’s a premium PSU it comes with built-in protection features such as the PP/OVP/UVP/SCP/OCP/OTP. All these features and designs combine to deliver a very robust, powerful, and good-looking PSU that also looks good while doing so. The 10-year warranty included by Asus just adds the icing on the cake and makes it the best PSU overall for RTX 4080. Investing in it would be a wise choice and it won’t let you down.


They say that save the best for last and if you are still reading then I have an overkill listing of PSU that you can use for running a system that will be hosting an RTX 4080 and other high-end components that are only found on enthusiast-class PCs.

The be quiet! Straight Power 11 Platinum 1200W is an 80-plus Platinum power-rated PSU which can reach efficiency up to a staggering 93.9% making for less power consumption and cooler temps since not a lot of heat will be generated as even at max capacity the system will not be able to max out the PSU’s power capacity.

The silent wings 3 fan comes with an advanced fluid dynamic bearing and paired with a 6-pole fan motor it is one of the most long-lasting PSU fans out there. With a funnel-shaped fan opening the fan inlet not only facilitates better airflow which means that it will be able to perform better as well.

The wiring inside the chassis is also done neatly and there is no obstruction of airflow from the clutter of wires further improving airflow, which ultimately leads to prolonging the life of the components inside. The Japanese capacitors are also cut as the PSU is made up of the best components. These capacitors are capable of operating at 105c further adding to the durability of the PSU.

Since it’s the best one on the list so, of course, the cables are fully modular which makes for a very clean and tidy look as the extra cables are hidden from sight, which also increases the airflow in your PC casing. The PSU comes with Multi GPU support as it comes with 6 PCIe connectors and handling a single GPU like an RTX 4080 is a walk in the park. It has all the protective features such as OCP, OVP, UVP, SCP, OTP, OPP, and SIP which makes it one of the best PSUs out there that delivers stable power input to your PC build. The only downside is that it comes with a hefty price tag. If money isn’t a problem, then I would suggest going for it as it will make it worth your while with the features and performance.


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Mussab Ali
Mussab Ali

I love building gaming rigs and benchmarking games on them. I am a PC builder by day and content writer by night.