Ive been looking at fan configurations for case cooling and ive also seen ducting mentioned a few times too. Now the question is what would happen or effect would it have if i was to mount a fan on the side of my case, connect a duct from it to cpu fan but have the fans at differnet speeds - ie the case fan pulling or pushing (dependant on the cpu fan) more air in than the cpu fan could shift.......does that make sense ?