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The best PSU to buy in 2025

Best Product The Corsair RM850x.
Corsair
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Get straight to the top tech—no junk, just the best.
Updated less than 17 hours ago

If you're building a PC, a PSU, or a power supply unit, is a more important aspect of the build than you might think. If you're buying one of the best graphics cards, or are or are planning some RAM or CPU overclocking, you'll need a power supply that has a high wattage and high-end components, but you can get a great power supply without all the bells and whistles, too.

Our favorite power supply is the Corsair RM850x, as it's all the power you need to run the most high-end PCs, with top-tier components. But whatever your budget or needs, here are the best power supplies you can buy.

Corsair RM850x
Corsair RM850X 850w
The best all-round power supply
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FSP Hydro G PRO 1000W ATX 3.0 & PCIe 5.0 Gen 5 12VHPWR, 80 Plus Gold Full Modular Power Supply Active PFC Power Supply 10-Year Warranty Longer Lasting PSU (HG2-1000-G5T)
FSP Hydro G Pro 1000W
Best midrange PSU
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Thermaltake Toughpower GF3 1350W
Thermaltake Touchpower GF3 1350W
Best PSU for top graphics cards
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be quiet! Dark Power 13 1000W Titanium
Be quiet! Dark Power 13 1000Q
Best high-end PSU
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ASUS ROG Thor 1000W
Asus ROG Thor 1000W
The most efficienct top-tier power supply
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EVGA SuperNOVA 850 GM
EVGA Supernova 850GM
Best small form-factor PSU
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The Corsair RM850x.
Corsair

Corsair RM850X 850w

Pros
  • Plenty of power for the most high-end components
  • Runs cool and quietly
  • Modular design lets you use only the cables you need
  • Attractive style
Cons
  • Lacks the power for heavy overclocking top GPUs

Why you should buy this: It's all the power supply almost anyone could need.

Who's it for: Gamers and system builders using high-end components.

Why we picked the Corsair RM850X:

The Corsair RM850X is a great all-around power supply, with quality components, a quiet fan, and excellent build quality. It's fully modular, so you can make do with just the cables you need, helping to reduce cable mess inside your case. It supports six PCI-Express 6/8pin connectors, so there are plenty for the most high-end of graphics cards. There is no native support for the new 16-pin Nvidia power connector for its RTX 40-series cards, but you can use the adapter just fine.

This model is available in other wattage capacities, including 1,000W if you wanted to use it for powering top-tier cards like an RTX 4090, but you can run that with an 850W PSU without difficulty.

This PSU is made with 100% Japanese capacitors, rated to hit up to 105 degrees without difficulty, so stability is all but guaranteed. It's also 80 Plus Gold certified, so runs very efficiently to help keep energy bills low.

Corsair RM850x
Corsair RM850X 850w
The best all-round power supply
FSP Hydro G Pro 1000W PSU.
FSP

FSP Hydro G Pro 1000W

Pros
  • Supports ATX 3.0 and PCIE 5.0
  • 1000W capacity is plenty for any hardware
  • Excellent modularity
  • Gold efficiency
  • Long 10-year warranty
Cons
  • Not as efficient as top models

Why you should buy this: It's a powerful midrange PSU at an affordable price.

Who's it for: Those wanting to spend less than $150 on a capable PSU.

Why we picked the FSP Hydro G Pro 1000W:

This is a stable, capable, and powerful PSU that's more than enough for almost any gaming or enthusiast PC, despite its relatively affordable price tag. With 1,000W, there's almost no hardware that this PSU can't run, and it has native support for the latest standards for graphics cards and motherboards.

It has 80+ Gold efficiency, which is good enough for most users, and though it isn't quiet as efficiency as Platinum or Titanium, which means the build quality won't be quiet as good, but this is still a high-quality unit at a very affordable price.

It's fully modular, helping to keep cable mess down, and it has semi-passive modes to help keep noise levels down when it's not doing much.

FSP Hydro G PRO 1000W ATX 3.0 & PCIe 5.0 Gen 5 12VHPWR, 80 Plus Gold Full Modular Power Supply Active PFC Power Supply 10-Year Warranty Longer Lasting PSU (HG2-1000-G5T)
FSP Hydro G Pro 1000W
Best midrange PSU
Thermaltake Toughpower GF3 PSU.
Thermaltake

Thermaltake Touchpower GF3 1350W

Pros
  • 80 Plus Gold certified efficiency
  • ATX 3.0 certified with 16-pin VGA power connector
  • Modular design lets you use the cables you want
Cons
  • Expensive
  • Lacks top-tier efficiency rating

Why you should buy this: It's a powerful, stable power supply with support for the new ATX 3.0 standard.

Who's it for: Gamers and enthusiasts building a PC with a modern, flagship graphics card.

Why we picked the Thermaltake Toughpower GF3:

The Thermaltake ToughPower GF3 is the perfect power supply for those running high-end RX 7000 or RTX 40-series graphics cards,. It has all the power they need to run, and then some — so there's room for overclocking or running other high-end components. It also has all the connections you could need, including multiple traditional 6-pin and 8-pin PCI-Express power, as well as a single Nvidia 16-pin power connector. That means there's no need to use those nefarious adapters with this power supply.

It's 80 Plus Gold certified, so runs efficiently, but it's not quite as efficient as the very top models, so try to keep it in the sweet spot range of between 50 and 80% load if you want it to run at its best. It's entirely modular, so you only have to use the cables that you need, and it runs cool and quiet, so you'll never hear it, even if it's working hard.

It's on the expensive side, but this is a power supply that will last you a decade or more, so it's a worthy investment.

Thermaltake Toughpower GF3 1350W
Thermaltake Touchpower GF3 1350W
Best PSU for top graphics cards
be quiet! Dark Power 13 PSU.
be quiet!

Be quiet! Dark Power 13 1000Q

Pros
  • High wattage for high-end hardware
  • Native support for PCIe 5.0
  • Smart modular design
  • Quiet operation
  • Titanium efficiency
Cons
  • Expensive
  • Overkill for most

Why you should buy this: It's a top-tier PSU with all the most important features, at a fair price.

Who's it for: Anyone who wants a top-tier PSU without costing the Earth.

Why we picked the be quiet! Dark Power 13:

Be quiet! is a sterling brand in the power supply space, so it's no surprise to see one of its top models on our list. This Dark Power 13 has stellar reviews everywhere you look, a massive capacity so it can handle even the most powerful of graphics cards and CPUs, and it's loaded with native support for all the latest standards. That includes a 600W PCIe 5.0 power cable, and multi-CPU plugs for the top motherboards.

It's entirely modular, too, so you can chop and change whatever cables you need and reduce overall cable clutter. The Titanium efficiency is as good as it comes, too, so you can guarantee you aren't wasting power when you're running your high-end gaming system.

Any concerns? Be quiet! has you covered with a 10-year warranty for complete peace of mind.

be quiet! Dark Power 13 1000W Titanium
Be quiet! Dark Power 13 1000Q
Best high-end PSU
Asus ROG Thor Platinum PSU.
Image used with permission by copyright holder

Asus ROG Thor 1000W

Pros
  • High wattage
  • Cool-looking OLED display
  • Platinum efficiency
  • ATX 3.0 certified
Cons
  • Expensive
  • More than most need

Why you should buy this: It's an awesome-looking PSU with support and power for anything.

Who's it for: Enthusiasts who want a unique-looking PSU with fancy features.

Why we picked the Asus ROG Thor 1000W:

The Asus ROG Thor is a PSU that's overengineered in almost every way, and we love it for it. It has a 1000W capacity, giving it enough power for any gaming PC - even one equipped with an RTX 4090 and Intel Core i9-13900K. It has an OLED panel built into the side, which looks very cool, even if it's largely just for cool animations and keeping track of usage. The RGB lighting looks nice too, making this one of the best-looking power supplies.

It's also incredibly efficient, with an 80 Plus Platinum rating ensuring that you waste as little power with this PSU as possible; even at very low loads. It's entirely modular, so you can use the cables you need and nothing more, and it is ATX 3.0 certified, so it has a PCIe Gen 5.0 12-pin power cable for some of the most powerful GPUs you can buy.

ASUS ROG Thor 1000W
Asus ROG Thor 1000W
The most efficienct top-tier power supply
EVGA SuperNova 850W SFX.
Image used with permission by copyright holder

EVGA Supernova 850GM

Pros
  • Compact SFX form-factor
  • High wattage
  • Excellent efficiency
  • Impressive build quality
  • Handy accessories
Cons
  • No benefit to compact design in larger PCs
  • More expensive than contemporaries at this wattage

Why you should buy this: It's a powerful PSU in the SFX size.

Who's it for: Anyone building a powerful, compact PC.

Why we picked the EVGA SuperNova 850GM:

Most power supplies use the ATX form factor, but SFX offers system-builders the chance to have a powerful PSU in a much more compact size. The SFX form factor is shorter and shallower than your average PSU, making it a great fit for compact PCs. And yet, it still delivers up to 850W of power, and it's 80 Plus Gold efficient, so it won't even waste too much energy.

It's a modular design, so you can choose the cables you use, and it has a quiet and effective fan, helping to keep the high-quality capacitors cool. It also comes with useful extras like a custom backing plate to help fit it to your case, and a 24-pin jumper for helping to test the PSU or any attached accessories and components.

EVGA SuperNOVA 850 GM
EVGA Supernova 850GM
Best small form-factor PSU

Frequently Asked Questions

Does Gold or Titanium efficiency matter?

For efficiency and money saving, the difference isn't too dramatic. A Titanium PSU will save you money over time, but whether it will make up the price difference between two units is harder to say. What a Titanium unit will be, though, is higher quality. They have to be made to a higher standard, so their components tend to be better. You're more likely to find higher-temperature thresholds, which can mean passive operation for quieter use.

You don't need a higher-efficiency, but it can be worth paying for if you want a higher-quality PSU.

What wattage PSU should I buy?

This depends on the components you're using, and you are best adding it up yourself to be sure. However, for a quick guide:

  • 550W — For entry-level PCs using onboard graphics, this is plenty.
  • 650W — For basic gaming PCs with older or lower-power graphics cards.
  • 850W — High-end gaming PCs and powerful workstations need additional power from units like these.
  • 1000W+ — Top-tier gaming PCs with the most powerful graphics cards, or anyone doing demanding overclocking.

If you want some more advice on power supplies, check our PSU buying guide to help you choose the right device for your setup.

Jon Martindale

Jon Martindale is a freelance evergreen writer and occasional section coordinator, covering how to guides, best-of lists, and explainers to help everyone understand the hottest new hardware and software in desktops, laptops, and on the web. He's also written articles on how to make your PC more efficient for the summer, and how he fixed his backpain with an annoying pop-up app.

Although Jon covers a wide range of topics at DigitalTrends, his particular focus is on PC components and peripherals, keeping our lists of best power supplies and best ergonomic mice up to date, as well as breaking down how to install the latest graphics cards to boost your gaming performance. He's also written gaming performance guides, and made sure that the crypto traders out there are using the best wallets for their digital tokens.

Alongside DigitalTrends, Jon also writers for Forbes, Lifewire, and Microcenter, has authored two novels, and provided back story and dialogue for a handful of games. He's an amateur game developer, and has made a few game prototypes in his spare time -- with a little help from ChatGPT. Jon's also an avid board gamer, getting in regular games of epic tabletop fare like Twilight Imperium and War of the Ring where he can. He's a father to two kids who recently discovered the joys of Pokémon, and keeps his aging French Bulldog cross busy on regular walks.

 

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