Hehe, I guess that's possible too. Or just use the 5v from a Molex plug rather than the 12v to power the fan
Plug a wire into the 5v plug
Or you can use 7V if you prefer, for a balance between speed and silence:
http://download-v5.streamload.com/b...-e730c01e4d67/nissmo300/Hosted/site/volts.htm