An important tip from one of our users: don't just check total power output, find out what you need in the way of current on each power rail. If you need 20 A on your +12V rails and the supply only has 15A, it doesn't matter how many watts the supply puts out: don't buy it. Make certain that you have ENOUGH rails, too: sometimes, you need more than just two +12V rails for your setup.
Replacing an existing power supply is easier: just get a replacement that meets or exceeds the specifications of the old one. (You can usually find those printed on the side of the supply.)
That said, here's a power supply that is compatible with most ATX format motherboards, puts out 650 watts of power (see specifications for exact distribution). Could this be your next power supply?
- ATX12V v2.01 CompatibleCompatible with the ATX12V v2.01 standard, the COOLER MASTER eXtreme Power RP-650-PCAR power supply provides enhanced power stability to drive Intel and AMD processors as well as other system components.
- 650W Maximum PowerThe COOLER MASTER eXtreme Power RP-650-PCAR provides a maximum power of 650W to deliver safe, reliable output for high-end computer systems.
- Quiet OperationAn intelligent 120mm sleeve bearing fan delivers whisper-quiet cooling and ensures quiet operation through fan speed adjustments in response to load