4 fans. 1 front, 1 top, 1 back, and 1 in the lower chaper by the psu. but the one in the bottm chamber will need to be removed if ur using a long psu such as the ocz powerstream. the 80mm for the vid card i just plain old took out. no one uses it and it is in the way, it practiaclly covers the whole mobo. i wouldnt even be able to put it on with the size of my heatsink. you do get 3 fans with teh case but im only using 1 b/c the panaflos are so much better