That's the way to go, attache the pump to a 4 pin fan controller and play with it, my asus crosshair formula V don't let me ajust pump speed unless it's on " DC" mode not PWM. again with my H60 I could get it near silent at around 80% depending on how a do the transition to that speed! sometimes I get lucky sometimes not, most of the times 60% is totally silent and easy to get, but I decided to position my tower at almost 8 feet away from me (bought 2 long HDMI s of 10 feet each for my dual HD+ monitors and Cross fired cards and a completely wireless strong noise cancelling gaming headset) now I don't care about the pump being a bit audible anymore !! hahaha ( and less electromagnetic radiations exposure from the tower components too).