I have the HX520 and I dont hear any whine or anything.I bought it from Provantage.com for $98 without any rebates involved. They also have fast delivery times. My setup ,e4300@3ghz & 8800GTS only uses at most 220 watts (3dmark 2006, TAT@100%, Bittorrent, and defraging 1 harddrive)and ~130 watts...