Just got rid of my Thermaltake fan, was getting very loud. Bought an arctic 11 and it is very quiet, but temps ten degrees higher. Running 40c at Idle and 68c during burn-in test. Seems high to me. I took it off and reapplied the thermal paste. "arctic silver 5" same results. I don't think it fits right or maybe just a crappy heatsink? Any help or advice on a socket 775 specific heatsink would be great! Or any advice on the temps. I have a q9550 quad processor. Thanks!