I rekon I'll give this a go on my Q6600. Am getting 80c temps at 3.2GHz with a thermalright XP90c cooler and low RPM 90mm fan. (Thats with 22c ambient running Intel Burn test) With a lap, both on CPU and HSF, plus a higher CFM fan and new application of AS5 i might get it sorted. Any before and after results on temps? Other laps I've seen have shown only a mild improvement.