I searched everywhere and tryed everything from reversing the fan on the side to adding 2 fans to the heatsink and it screamed like a banshee because I was getting such high temps such as 51c idle/58c full load with prime95.... and I was like WTF i have the second best Heatsink on the market... then in the end... in the back...i reversed the 2 panaflo H1As in the back from being exhaust to being intakes and my CPU temps dropped from 51c idle/58c full load to 41c idle/49c full load... amazing a 10c temperature drop.... also my case temps full load dropped from 33c to 26c... a 7c case temp drop....so for those people who are getting awfully high cpu and case temps try reversing the fans in the back and side...intake is more important i found out..this is because the cold air in the read blows in and my cpu/heatsink/hs-fan is right there and it gets the cold air being blow in and swallows it.. that produces such low temps... my current fan setup is 1 Panaflo L1A 120mm intake/ 1 80mm Power Logic exhaust in side and top/ 2 Panaflo H1As intake in back