Be Quiet! Dark Power Pro 650W
 

Overall it has to be said that Be Quiet! has made a fantastic product - it works, it has supreme efficiency, excellent quality outputs, lots of cable variation (which is perfect for a modular PSU) and is damn near silent to boot. We were really struggling to find things wrong with it because it's really not that expensive when you look at the whole package, and the only thing that grates us is the RMA to Germany - other companies offer better after-sales support.

http://www.bit-tech.net/hardware/200...wer-pro-650w/1