Vantec Stealth 520W Power Supply
 

The Vantec VAN-520A Stealth power supply has a few nice features that should guarantee it a very successful lifespan in the stores. The ability of the powersupply to manage all three fan speeds is pretty good, as this can be a useful way of keeping your overall system noise down. This PSU is not the absolute quietest one we have ever tested, but it does offer pretty good noise levels under the automatic setting. For more powerful cooling, a simple flick of the switch turns the fans up to higher RPM levels.

Link: http://www.pcstats.com/articleview.cfm?articleID=1782