Best PC power supply 2017: top PSUs for your PC

It’s crucial, but often overlooked, to use only the best power supply in your computer. Without it, there’s no way to energize your 18-core Intel Core i9-7980XE, much less the company’s best gaming CPU it’s ever come up with. Of course, a power supply, also abbreviated PSU, is equally necessary for the rest of the parts in your PC as well.

That said, a poor quality power supply can cause enormous headaches down the road. When the power supply starts to fail, it isn't always obvious what the problem is. One day, you're playing a game and suddenly your computer crashes and reboots. Troubleshooting is only fun when you get to the root of the problem quickly, so buying the best power supply is a solid investment in your computer and your personal sanity.

Finding the right power supply is crucial, but there are plenty of great options out there to suit your needs. There are great budget options, powerful, high-capacity power supplies for huge gaming rigs, and ones specifically built to run quietly. Whatever you might need, we’ve found the best of the best power supplies for you.

Best power supply: Corsair RM750x

The best all-around power supply for your needs

Form factor: ATX | Capacity: 750W | Efficiency rating: 80 Plus Gold | Modularity: Full | Warranty: 10-year

Zero-RPM fan mode
Modular Cables
 750w max capacity small for power gamers

The Corsair RM750x is the best all around power supply for your needs. On top of a 10 year warranty and an 80 Gold Plus efficiency rating, the Corsair has a fully modular cabling system. That means you only need to install the cables you need. Not having unused cables in your case is great for air-flow and for those who appreciate the value of good cable management.

Best budget power supply: EVGA 500 B1

Everything you need to get started

Form factor: ATX | Capacity: 500W | Efficiency rating: 80 Plus Bronze | Modularity: None | Warranty: 3-year

Low price
6 SATA cables
500w rating

When you’re trying to keep the price of your PC similar to that of a console, you don’t want to blow a lot of your budget on a power supply. That’s where more economical options like the EVGA 500 B1 come in handy. This PSU is essentialist without neglecting the needs of its audience. For less than $50 USD, you can expect 500 watts of power transmitted through several SATA cables and two PCIe slots. A three-year warranty is merely icing on the cake.

Best silent power supply: be quiet! Straight Power 10

Quiet as the night

Form factor: ATX | Capacity: 400W – 700W | Efficiency rating: 80 Plus Gold | Modularity: Semi | Warranty: 5-year

Quiet  ATX and EPS support
A little pricey across capacities

Power supply fans seem to run the loudest, and unlike case fans, they aren't quickly swappable. Fortunately the Straight Power 10 line up runs nice a quiet. Options range from 400w to 700w, and they're SLI and Crossfire certified. They also have a modular design, letting you use only the cables you absolutely need to use. It's also low-profile, freeing up even more space inside your computer tower.

Best compact power supply: Silverstone SFX Series SST-SX550

Perfect for Micro ATX and Mini ITX PC builds

Form factor: SFX | Capacity: 550W | Efficiency rating: 80 Plus Gold | Modularity: None | Warranty: 3-year

Compact size
ATX and EPS support
Limited number of connectors

Power supplies can occupy a ton of space in your desktop tower, however time has allowed for the units to get smaller while the power they emit only expands in magnitude. The Silverstone SX550 is almost half the size of other power supplies, so that you can better facilitate cables and airflow inside your computer. This makes it notably ideal for micro ATX and mini-ITX builds, though you could slide it into a mid- or full-size tower as well if you deem it necessary.

Best high capacity power supply: Corsair AX1500i

Monster power

Form factor: EPS | Capacity: 1500W | Efficiency rating: 80 Plus Titanium | Modularity: Fully | Warranty: 10-year

Titanium efficiency rating
Monster capacity
Huge price tag
Enormous size

This is an absolute monster of a power supply. This is for the serious builder who plans on powering multiple graphics cards, cooling systems, and perhaps a small village in rural North Dakota. It has the highest possible 80 Plus Titanium efficiency rating, and is fully modular so you only need to add the cables required by your build. If you have the money to go big, this is the power supply to get. 

Gabe Carey has also contributed to this article