Have five fans on this case. one in front one on the bottom, Psu fan on botton. One on the case wall blows right where the video card and CPU is. last is the rear fan which is on the top in back. PSU is 120mm blows out the back. The CPU fan blows right into the heat sink.The other three all push air into the cabinet. All fans but the cpu fan are 120mm. Cpu is I think a 90mm but can't remember now. If i think about it i will measure it next time i open it up I was surprised to see there is dust coming thru the case cover on the back side of the motherboard. Can't figure out how its doing that. I like the case! Its doing what i wanted it to do