One of my friends complains of noise coming from his computer and wants it as QUIET as possible. He has 1 80mm exhaust fan and 1 CPU fan. The pc is on for a few hrs a day( 5 -6) So i was thinking of a HUGE heatsink maybe and then some sort of Thermaltake 80mm adjustable speed fan for the exhaust? Or maybe one of the Zalman 7000 for CPU cooling?