I am running AMD 64 3000, 1 gig pc 3200, BFGTECH 6800gt oc (the old version with one fan), and msi k8t800 and 420 watt power supply and 3 case fans as came wiht the case, 2 in the back which cannot be taken out and are exhausting, and 1 fan side which blows air in. I never really had a problem with my computer over heating except my videocard and now with the air on 73 farenheit it want to overheat even though last month we didn't have the air on and it was hotter in my room. I dont know why but im afraid im going to burn out my gpu and cpu when playing World of Warcraft.