How is this achieved? I have a Corsair 450d case. I currently have a 280mm (Swiftech H240X) mounted on top as exhaust, with two 140mm intakes in front, a 120mm intake on bottom, and 120mm exhaust on back. I've heard it's a bad idea to use radiators for intake because you're putting hot air into the case. Does that mean I'm (A.) limited to just one more 120mm radiator (on my rear?)?