SeaSonic SS-350ET 350W 24-Pin SATA Power Supply

This isn't something that you'd want to hook up to a high-end gaming rig or anything like that; it doesn't even have an 8-pin PCIe connector for a video card. But for an everyday build or an HTPC, you can't beat this deal. It's a brand-new unit from one of the best power supply OEM's in the world, easily delivered the 350W rating in some quick testing I did when it arrived, and now lives in my HTPC rig, where it will probably be going strong 10 years and several hardware upgrades from now. And all for less than $30 after shipping. Grab this while they're still available. Nobody ever messed up by getting a Seasonic.

Seasonic power supplies are quiet, efficient, and reliable. If you aren't building a machine for gaming, video editing, or some kind of heavy duty number crunching, you don't need a bigger supply than 350 watts.Unfortunately less reputable brands may rate their supplies much higher than the actual power they will deliver, but 350 watts from Seasonic should do the job unless you have multiple processors or power-hungry graphics cards,

It's powering an Athlon X2 450, HD 6570, dual-channel DDR3, HDD, optical drive and two 12cm fans without a huc-cup. It's very quiet - as are all SeaSonics I've used.