Ultra Products X3 1000 Watt Modular Power Supply
 

Except for those running a massive system that includes a good deal of the latest hardware, 1000W is more power than you could possibly need. During the course of the review, the Ultra Products X3 1000 Watt modular power supply came close to powering two full systems, and there was still plenty of power left to toss much more hardware at it.

http://www.bigbruin.com/2007/x31000_1