Best PC power supply 2018: top PSUs for your PC

We’re just going to come out and say it: when you’re building the best PC, there’s nothing more important than the best power supplies. Sure, it’s tempting to skimp on your PSU to splurge on one of the best graphics cards, but trust us – it’s not worth it. Every component in your computer relies on the best PSUs for power, and if you cheap out – you could end up bricking your entire system.

Trust us, there’s nothing worse than a failing power supply. And, to make things worse, most of the time you won’t even notice when your PC power supply is failing before it’s too late. Sure, some symptoms are obvious like having your PC just not turn on, but they could also be as subtle as some lost power efficiency. Just do yourself a favor – don’t compromise, and just get the best PC power supply you can get. No one wants to burn their house down just to save a few bucks.

We don’t want to be downers though – there’s a wide range of fantastic PC power supplies available right now. And, even if you’re trying to watch your budget, you can still get one of the best PC power supplies. There are even some amazing high-power units that can generate the ludicrous power required for the best gaming PCs, if you have the money ready. No matter what you’re looking for, you can be sure that you’ll find the best PC power supplies right here on this list.

The Corsair RM750x scores the top spot on this list for one simple reason: it’s the most well-rounded power supply you can buy today. On top of a 10 year warranty and an 80 Gold Plus efficiency rating, the Corsair has a fully modular cable system. This means you only need to install the cables you need – you can say goodbye to the mess of cables and shoddy airflow that non-modular PSUs endure.

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.

Even the best PSUs seem to have extremely loud fans, and unlike case fans, it’s not exactly easy to replace them. Luckily, the Straight Power 10 line-up runs nice and quiet. Options range from 400w to 700w, and they’re SLI and Crossfire certified. They’re also modular, meaning you only need to use the cables that are necessary for your build.

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.

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.

If you’re trying to build a PC worthy of showing off, you can’t do much better than the Thermaltake Smart RGB 700W. Not only does it have beautiful, customizable RGB lighting, but it also features a reliable 80 Plus efficiency certification and high enough wattage to support even the best gaming PCs. Sure, it isn’t modular, but at under a hundred bucks, we weren’t really expecting it to be.