Skip to main content

Digital Trends may earn a commission when you buy through links on our site. Why trust us?

The best PC power supply for 2023

Corsair RM850x
Corsair RM850X 850w
The best all-round power supply
Jump to details
EVGA 550 BP, 80+ Bronze 550W, 3 Year Warranty, Compact 120mm Size, Power Supply 100-BP-0550-K1
EVGA 550 BP
Best budget power supply
Jump to details
Thermaltake Toughpower GF3 1350W
Thermaltake Touchpower GF3 1350W
Best PSU for top graphics cards
Jump to details
ASUS ROG Thor 1000W
Asus ROG Thor 1000W
The most efficienct top-tier power supply
Jump to details
EVGA SuperNOVA 850 GM
EVGA Supernova 850GM
Best small form-factor PSU
Jump to details
XPG Core Reactor 650W
XPG Core Reactor 650W
Best mid-range PSU
Jump to details
cec energy efficiency pc buildout 2016 power supply
Image used with permission by copyright holder

Fitting your PC with one of the best power supplies is a great way to provide it with stable, clean power that will enhance its shelf life and improve overall system stability. If you're buying one of the best graphics cards, or are or are looking to try some 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. It's also modular, has incredible efficiency, and runs cool and quietly too. The much more affordable Corsair CX550 is a great budget pick, and anyone looking to do extreme overclocking might want to opt for something like Thermaltake Toughpower GF3 1350W.

Whatever your budget and needs, here are the best power supplies you can buy.

The Corsair RM850x.
Corsair

Corsair RM850X 850w

The best all-round power supply

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
EVGA BP550 550W PSU.
EVGA

EVGA 550 BP

Best budget power supply

Pros
  • Modest wattage is more than enough for most PCs
  • Affordable price
  • Great build quality
  • Stable PSU rails
  • Quiet operation
Cons
  • Lacks high wattage for top-tier components
  • Not as efficient as more expensive models

Why you should buy this: It's an affordable power supply for entry-level PCs.

Who's it for: Anyone wanting a cheap power supply that will still keep your components safe.

Why we picked the EVGA 550 BP:

The PSU we recommend in most of our budget gaming system builds is the EVGA 550 BP. It isn't a trendsetter or showstopper, but it is a stable and safe power supply. At this kind of price, that's exactly what you need. Its 550W capacity is more than enough for most PCs, outside of those with top-tier graphics cards, and it's a quiet and well-built PSU, with a capable 120mm fan, and all of the typical voltage protections to ensure your components remain safe

Despite the relatively low cost, you still get a three-year warranty and 80+ Bronze certification for reasonable efficiency. Compatible with all modern CPUs and motherboards, the EVGA 550 BP has the cabling to power dual PCIe 6/8-pin graphics cards, and a great number of SATA drives. It's not modular, so you'll need to tuck away the spare cables, but most ATX cases have plenty of space for that.

You can go cheaper than this, but we wouldn't recommend it. Those power supplies tend to not be as stable, nor offer the kind of protection of units like this one.

EVGA 550 BP, 80+ Bronze 550W, 3 Year Warranty, Compact 120mm Size, Power Supply 100-BP-0550-K1
EVGA 550 BP
Best budget power supply
Thermaltake Toughpower GF3 PSU.
Thermaltake

Thermaltake Touchpower GF3 1350W

Best PSU for top graphics cards

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 graphics card for those running new 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
Asus ROG Thor Platinum PSU.
Image used with permission by copyright holder

Asus ROG Thor 1000W

The most efficienct top-tier power supply

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

Best small form-factor PSU

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
XPG Core Reactor 650W
XPG

XPG Core Reactor 650W

Best mid-range PSU

Pros
  • Great mid-range wattage
  • Impressive efficiency
  • Very quiet
Cons
  • Lacks native ATX 3.0 connections

Why you should buy this: It's a great mid-range PSU with excellent efficiency.

Who's it for: Anyone who wants a powerful PSU without breaking the bank.

Why we picked the XPG Core Reactor:

The XPG Core Reactor is a great mid-range power supply with a 650W capacity that is more than enough for even some high-end graphics cards and processor combinations. It's not enough for the flagship cards, but there's plenty here for most gaming PCs and it's far cheaper than the top power supplies.

It's 80 Plus Gold certified, so will remain efficient even at lower loads, and it's fully modular, so you can keep your cabling tidy. The 10-year warranty is great peace of mind too, knowing that should you have any problems for the next decade, you're fully covered.

The 120mm fan is quiet, and has intelligent control so won't spin up if it's not needed. You can also adjust the fan curve for maximum performance or lower noise levels.

XPG Core Reactor 650W
XPG Core Reactor 650W
Best mid-range PSU

If you want some more advice on power supplies for the latest graphics cards, check out our guide to the best PSUs for the RTX 4090 and 4080.

Jon Martindale

Jon Martindale is the Evergreen Coordinator for Computing, overseeing a team of writers addressing all the latest 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.

Jon also writes for Forbes, Lifewire, and Microcenter, has authored two novels, and provided back story and dialogue for a handful of games.

 

This Alienware gaming PC with RTX 4080 is $600 off for Prime Day
Alienware Aurora R16 sitting on a coffee table.

This year's Alienware Prime Day deals brings a bargain that will be hard to refuse for any serious gamer -- Dell's $600 discount on the Alienware Aurora R16 gaming desktop with the Nvidia GeForce RTX 4080 Super graphics card, which slashes its price from $2,800 to a more reasonable $2,200. While it's still relatively expensive, it's an excellent price for a machine that's this powerful, in one of the most interesting Prime Day gaming PC deals. You're going to have to complete your purchase quickly if you're interested though, as we don't think offer will last until the last minute of the shopping holiday.

Why you should buy the Alienware Aurora R16 gaming desktop
The Alienware Aurora R16 isn't just an excellent gaming desktop -- it's our top pick among all the best gaming PCs that we've reviewed this year. It all begins with the powerful performance that it offers that will meet the needs of even the most hardcore gamer, with this configuration boasting of the 14th-generation Intel Core i9 processor and the Nvidia GeForce RTX 4080 Super graphics card. It also comes with 32GB of RAM that will let your run multiple apps alongside your video games, such as streaming software, according to our guide on how much RAM do you need.

Read more
This gaming PC with RTX 4060 Ti has a $300 discount before Prime Day
CyberPowerPC Gamer Xtreme VR Gaming PC

Amazon Prime Day is the perfect time to save hundreds (Yes, hundreds!) of dollars of high-end technology and electronics. Gamers out there looking for a new PC to add to their gaming experience will absolutely love this deal. Prime members can receive 13% off the CyberPowerPC Gamer Xtreme VR Gaming PC with RTX 4060 Ti. Originally priced at $1,500, you can score this cool PC for just $1,300! Add this PC to your cart and be sure to check out some of the other best Prime Day deals we've found so far. Keep reading to learn more about this gaming PC!

Why you should buy the CyberPowerPC Gamer Xtreme VR Gaming PC
Finding the perfect gaming PC isn't always the easiest task. Luckily for you, the CyberPower PC Gamer Xtreme VR Gaming PC is perfect for any kind of gamer who loves fast speed and high resolutions. With the latest generation of high-performance Intel Core processors and ultra-quick DDR RAM to easily handle system-intensive tasks, this PC provides smooth gaming and a unique multimedia experience. A few features of this PC include discreet video cards, an Intel 13th Generation Processer, a performance NVIDIA Graphics Processor and wireless 802.11 AC Wi-Fi. The purchase of this PIC includes a gaming keyboard and RGB 7 color mouse combo, so all you are missing is a gaming monitor!

Read more
This Lenovo Legion gaming PC with RTX 4080 Super is $660 off today
Lenovo Legion Tower 7i gaming PC sitting on a table.

Gamers who are planning to upgrade their gaming PC should consider the eighth-generation Lenovo Legion Tower 7i with the Nvidia GeForce RTX 4080 Super graphics card. That's because this machine is on sale from Lenovo with a 20% discount, which is equivalent to $660 in savings. From its original price of $3,300, it's down to $2,640 -- it's still not cheap, but it's actually a steal price for a gaming desktop that's this powerful. You're going to have to be quick in completing your purchase though, as the offer may be gone as soon as tomorrow.

Why you should buy the Lenovo Legion Tower 7i Gen 8 gaming PC
The Lenovo Legion Tower 7i Gen 8 challenges the best gaming PCs with specifications that will let you play the best PC games at their most demanding settings. In addition to the Nvidia GeForce RTX 4080 Super graphics card, it's equipped with the 14th-generation Intel Core i9 processor and 32GB of RAM that our guide on how much RAM do you need says is the sweet spot for high-end gamers. There's no such thing as a future-proof gaming PC as you'll eventually have to upgrade its components -- with easy swapping of parts being one of the advantages of gaming desktops over gaming laptops -- but the Lenovo Legion Tower 7i Gen 8 comes close as you'll be prepared for the upcoming PC games of the next few years.

Read more