I am curious about something, I know about positive and negative cooling but here is one thing that I am not sure on.
I have 2 140mm fans at the front, pulling the air in, and I have 1 120mm fan for exhaust. My curiosity is there is room at the TOP of my case for another 2 fans. So if I have another 140mm fan for air intake, and then another 120mm for exhaust would that be a waste of time, or should I do 2x 140mm front for air in, and 2x 120mm for exhausts?