I am using this HSF with their Noctua NF-P12 fan to cool my q6600 in a thermaltake Mozart Tx case. I have the q6600 oc'd to 3.2 (9x356) running on 1.328V and when I run prime, the temps hit about 65C according to core temp. It seems like anything over this results in prime errors. I even tried running at 9x360=3.240 and it bombed out after about 3 1/2 hours last night and the temps were around 67C. I had moved the V up two notches in my bios to 1.35V (which probably was around 1.34V after droop). First of all, is the fan I'm using on my HS enough or do you guys recommend more fan on this HS? Also, am I getting to the point where I'm going to get tons more heat from even slightly higher clocks? Just curious as to some of your thoughts.