make sure the fans make a good current through your computer. My computer is set up with 5 fans. 2 front intake (bottom), top fan blowing out, side fan high intake (cold air sinks onto graphics card), and rear 120mm turbine (looks like one, it can really blow!) blowing out.
thats the current of my computer, more blowing out is good to blow out the hot air, putting it all intake and one out will fry everything becuase the air heats up so much faster in a case (small space)
my 2 cents