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 1000 watts of power (see specifications for exact distribution). Could this be your next power supply?
- ATX12V v2.2 and EPS12V CompatibleCompatible with the ATX12V v2.2 and EPS12V standards, the SILVERSTONE OP1000 provides maximum power stability to drive the latest Intel and AMD processors as well as other components for desktop and entry-level server computer systems.
- 1000W Maximum PowerThe SILVERSTONE OP1000 power supply provides a maximum power of 1000W to deliver safe, reliable output for even the most enthusiastic computer systems.
- Highly EfficientDelivering typical 80% efficiency, the SILVERSTONE OP1000 power supply saves energy and may even reduce your electric bill!
- Efficient CoolingThe SILVERSTONE OP1000 features an 80mm dual ball bearing fan to deliver highly efficient cooling for the power supply and the whole system.