Best power supply for RTX 4080, which power supply do you need?

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With a new graphics card, you may be looking for a new power supply to accommodate it.

Updated: Nov 14, 2022 11:41 p.m.

This product launch season is full of RTX 4000 Series maps. While the RTX-4090 been out for a while now now is the time for the RTX4080a serious competitor for the best graphics card.

Although the launch of the cards has come under intense scrutiny. Both in terms of the cost of the first cards launched which are exorbitant and concerns about power consumption. Although initial rumors suggested it was higher and the version showed not to be too far off from the last generation.

Now with the new generation of cards, Nvidia also uses the new 12VHPWR connector. But the early adoption of ATX 3.0 specification did not come with ease. With lots of cconnectors burn on the 4090.

So with that, let’s take a closer look at what Power source because the RTX 4080 is best for you.

NOW READ: Where to buy RTX 4080

How We Choose the Best PSU for RTX 4080

Finding the right product can be a daunting task when you’re not sure what you’re looking for. That’s why sometimes it’s best to get another more informed opinion. We therefore offer expertise on the subject.

We have years of experience and knowledge of the market. We therefore know what to pay attention to between the different options offered by the power supplies. With the knowledge accumulated beforehand, we can evaluate the options.

Besides looking at the reviews of options on offer, there’s plenty to do. Make sure the PSU can handle the workload it’s being subjected to and how good the manufacturer’s track record is.

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Best PSU Buying Tips for RTX 4080

Now, there are some key characteristics of a power supply that will influence the best choice for you. So when it comes to the best PSU for RTX 4080, here are some of the main factors to consider.

ATX 3.0 Specification

One of the main considerations for this generation of power supplies is whether you want a native cable for your GPU. This would save you from having to use the dreaded, failed adapter. And instead you get a direct connection of the 12VHPWR connector.

However, this comes at a higher cost. New technologies aren’t too mainstream yet, so the limited options aren’t cheap to buy. So that may be a consideration for you. Especially if you don’t mind using the octopus of an adapter that comes with the cards.

Powerful

Another difference to consider that when looking for the best power supply for the RTX 4090 is the power. Cards will have different requirements, so you won’t need to spend so much on unnecessary expenses.

Wattage or power rating is the amount of power the power supply can supply. It’s about powering your whole system and so you have to consider the whole build. Although the GPU is one of the biggest contributors, CPU and other components also need supply.

The RTX 4080 has a TBP (total board power) of 320W. And Nvidia recommends a 750W PSU when paired with a Ryzen 9 5900 X. Although that could be higher if you’re considering a newer processor.

Or other custom models will have different recommendations. As the MSI Suprim suggests a total of 850W for your build. So there is an option for a safety net and pad if you need it. Which can be good for spikes that may occur during use.

Install power supply 3
Screw in place with supplied PSU screws

Modularity

Cables are no fun to manage in a build. Especially if your case is small, it can be difficult to integrate it well when managing. So one factor to help minimize any stress is modularity.

Modularity refers to whether the cables are replaceable and whether you have to pop them all out or save on unnecessary damage. There are options for fully modular (most common), semi-modular, or non-modular.

These differ in the number of cables attached. So non-modular would mean that all cables are pre-installed with no option to change or remove them. It should therefore meet your need for connections and occupy much more space. Although this type tends to be limited to budget options and lower wattages.

Then there’s the semi-modular which offers the choice for peripherals and VGA but tends to have the 24-pin ATX and CPU 8 pins attached. Although modular, you can choose any cable to save a lot of space and use only what you need.

Efficiency

Another standard for power supplies is the efficiency rating. It is the amount of supplied energy that is actually converted into useful energy for your PC. As the wall power supply is given as AC power, but your system needs DC power and there is inefficiency in the conversion released as heat. So there are notes to tell you how much is actually converted.

This standard is historically rated by the 80 Plus company and these efficiencies can be used to compare different options. The Gold option being the most common. And from the table below, you can see how these relate to efficiency. So if you want to save the most money on electricity, a higher rating is a good consideration.

Certification PSU 80 PLUS

Best PSU for RTX 4080

Now we take a look at what is the best selection for your new graphics card to make it perform as it should.

MSIMPG A850G

MSI MPG A850G PCIE5

MPG A850G PCIE5

Advantages

  • Native 12VHPWR connector
  • Quiet operation
  • Compact size

The inconvenients

  • More expensive option for the spec

For the best choice for your new RTX 4080, you can choose the MSI MPG A850G PCIe 5. It is an excellent choice for native support of the new ATX 3.0 connector. Giving you freedom over which cables you can use.

It is rated 80 Plus Gold to provide good efficiency in power conversion for what your system needs. Saving you a lot of money when it comes to operating it. With standard safeguards to prevent any system from burning out or doing what it shouldn’t.

The PSU is also fully modular with its 12VHPWR. Which means it is a good choice to reduce the number of cables. Especially since the numbers have increased over the years, the new spec really brings it down.

It also has a quiet mode to reduce noise while working at the bottom of your PC.

ROG LOKI SFX-L 850W Platinum

ROG LOKI SFX-L 850W

ROG LOKI SFX-L 850W

Advantages

  • Platinum rating gives it the best efficiency to save you money
  • Compact size to fit easily
  • RGB lighting to put color under your case

The inconvenients

  • One of the most expensive options

Another compact choice is the ROG Loki SFX-L 850W Platinum. It is also PCIe Gen 5 compliant with native 12VHPWR support to allow for a better job of cabling inside your case as well as with its fully modular construction.

Although ASUS ROG is a more premium manufacturer choice. So you pay a little more for the products, but they are of good quality. This still makes it a popular choice with a range of products that will also work well together.

It also has great efficiency. Cybenetics 80 Plus Platinum and Lamda A certifications. This means you can be sure that its operation will save you a lot in the long run, as its efficiency is one of the best available.

Cooling is excellent, with well-designed and thoughtful heatsinks and options. It also has a zero-decibel fan to keep it running quietly and stay away.

Corsair RM850x

Corsair RM850x

Advantages

  • Fully modular for customization and clean construction
  • Features a maglev fan for the quietest and longest performance.
  • Hybrid mode keeps fan off until needed
  • 10 year warranty to keep your power supply reliable and long lasting

The inconvenients

  • May be a more expensive option

Another simpler choice for a PSU for your RTX 4080 is the Corsair RM850x. It is a proven popular power choice for builds. So you know it’s a safe choice that can provide a great choice, especially with the privateer 12VHPWR solution.

It’s rated 80 Plus Gold, so it’s a fairly standard choice, but that means it may offer a cheaper selection as it’s not the latest spec. So you might miss some of the new options, but it can still get the job done.

In addition to being completely modular, it offers good cable management at all levels. This means the complete look can be kept simple and organized. Even if you have to use the adapter instead.

Final Thoughts

The RTX 4080 also comes across as a big card. Connectors can therefore be a good consideration when it comes to installation and management. But there are many choices between native support for the new connector or not.

There are several factors to consider depending on what you need. There is a price range depending on your budget. As well as how much you want to save on electricity to run it.

Overall, the most important things tend to be safety and effectiveness. So it’s best to avoid the cheapest options you can find, as they come with some danger with the unknown. And therefore always choose something reliable.

Best PSU for RTX 4080 FAQ

What is the power consumption of the RTX 4080?

The RTX 4080 has a total card power of 320W. That’s quite a significant amount but not higher than the previous generation, but you still need to consider what you’re pairing it with.

What is the recommended power supply for the RTX 4080?

Nvidia recommends using a 750W power supply for the RTX 4080. That’s when it’s paired with the 5900 X, so if you have something more powerful you might need to increase that number. Which is the case for some custom models of the 4080 as they suggest using at least 850W.

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