Ok guys the fans are making a lot of noise and one of them spins too slow. This is that leadtek gefroce ti4600 (WinFast A250 Ultra TD My VIVO) heres a pic http://www.bjorn3d.com/read.php?cID=35 (just scroll all the way down) it's the one with the huge heatsink. I rather buy replacement fans but I have no idea where to find these types of fans, leadtek hasn't replied to my question yet... I rather keep the heatsink if possible, this is for my sisters comp so its just gonna be running at stock speeds.