I want some fans to cool my case on top but I don`t know if I should get 2x140 or 3x120mm fans and with red or white leds. Have a look for your self http://ca.pcpartpicker.com/b/mcPscf
okay I`ll go with red but why 2x140? I know 2x140 will spin slower and push more air but I thought 3x120 make more noise but push more than air 2x140mm.