Update April 28 2017: We've made a few minor changes to our guide, but the best PSU list remains the same.

Best overall

EVGA SuperNOVA P2

EVGA 650 P2

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Rating: 80+ Platinum

Watts: 650W

This SuperNOVA P2 from EVGA is fully modular, enabling you to route only cables that you need for components, has an Eco Mode and sports the Platinum rating badge, so you know this unit will be able to power even enthusiast rigs.

Bottom-line: Has more than enough power for most PCs and is efficient for some savings.

One more thing: There's a 10-year warranty with this particular PSU.

Why the SuperNOVA P2 is a superb PSU

The SuperNOVA P2 combines the best in efficiency with quality components and brilliant features, matched by a 10-year warranty.

The SuperNOVA P2 (650W) took our #1 spot for PSUs simply because it represents a solid balance between affordability, efficiency and available features. Whether you're looking at the platinum 80+ efficiency rating or 10-year warranty, it's a superb option for anyone looking to provide more power to their PC for upgrades or start scratch with a new build.

The PSU is fully modular, ensuring you only use what cables are required by the PC. It also contains Japanese capacitors for added peace of mind that incredibly reliable and capable components are deployed. There are also a number of protection measures in place to protect not only the unit but the PC and everything connected to the PSU from power surges and more.

It's also quiet. Real quiet. If you're going for a near-silent water-cooled setup and require a PSU that has the ability to run without a fan up to a certain draw amount (and don't particularly want a fanless unit), the SuperNOVA P2 is an ideal choice. Even when the fan kicks in it's difficult to hear the blades spin from a distance.

You really can't go wrong with the 650W SuperNOVA P2, which packs more power than you'll likely need.

Reliable Second

SeaSonic G Series

SeaSonic G Series

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Rating: 80+ Gold

Watts: 550W

SeaSonic is a well-known brand in the PSU industry. Not only does the company sell its own units, but other manufacturers use its platforms for competing PSUs. The G Series is SeaSonic's high-end, performance line of power plants and the 550W unit is more than enough for most PCs.

Bottom-line: Perfect if you're after silent performance.

One more thing: It's SLI and CrossFire ready for multiple GPU setups.

Budget power supply

EVGA 430 W1

EVGA 430 W1

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Rating: 80+ White

Watts: 430W

EVGA's more affordable power supplies leave out the more fancy features like modular cabling to bring the price down to an absolute minimum. Sure, it's cheaper than other PSUs on the market and the efficiency rating isn't the best, but at just $32, this is a safe bargain for those on a tight budget.

Bottom-line: The 430 W1 proves you don't need to spend the big bucks for a decent PSU.

One more thing: Also available with 500W for $37.48.

Overkill

Corsair HXi Series

Corsair HXi

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Rating: 80+ Platinum

Watts: 1000W

While we did state above that you don't really need anything more than 500W for your gaming PC, there are those rare times when you need quite a fair amount of electricity. To supply all this energy to an insane enthusiast build, Corsair's HXi Series — specifically the 1000W option — will be more than enough. There are 850W and 750W varaints of the HXi available.

Bottom-line: Ideal for enthusiast setups and power-hungry rigs.

One more thing: Don't get this unless you really need it. We don't want you to waste your money on more than you need.

Conclusion

It's difficult to choose a good PSU for your build as there are many out there from reputable companies. One thing we strongly recommend avoiding is saving too much money. It's best to spend a little more on this component to get a unit that sports necessary protective features, as well as great reliability and support from the manufacturer. Just remember one thing when shopping: wattage isn't everything. Don't go for the highest number you see.

PCs only really need around 500W with a single dedicated GPU and a cheap 1600W PSU from an unknown brand will likely not be as good as a 500W option from the likes of Corsair. That all said, EVGA's SuperNOVA P2 650W solution is an excellent all-rounder.

Best overall power supply

EVGA SuperNOVA P2

EVGA 650 P2

See at Amazon

Rating: 80+ Platinum

Watts: 650W

This SuperNOVA P2 from EVGA is fully modular, enabling you to route only cables that you need for components, has an Eco Mode and sporting the Platinum rating badge, you know this unit will be able to power even enthusiast rigs.

Bottom-line: Has more than enough power for most PCs and is efficient for some savings.

One more thing: There's a 10-year warranty with this particular PSU.