Ive got 7 fans.
One on the top of the cas, one at the side, a suck in one at the back, and a blow out one at the back, a PCI slot fan, and one which sits between both harddrives keeping them cool and the CPU fan which is heat controlled. They are quite quiet (cheapo ones from e-buyer) But you can hear them if you see what I mean. They do a great job of cooling the case though!
