I have two systems and they are both using the Thermaltake W0009RU 420 purepower they are quite and run pretty stable for the price. The one is 2 years old and the other 1 week. Of course there are more expensive and more efficientPS on the market, but for my systems they work just fine.
Sandman/Intel C2D E8400 @3.00GHZ/ P5Q Pro Turbo Mobo / Xigmatik-1283 / 2-HD5670 Video-Crossfire / 4 Gig Kingston Ram / Antec P-180B Case
Notebook HP dv9720US 17" Wide Screen