[casecutter]

If you want really good results, you need one of the big boys, either the THermalright Ultra-120 or the Noctua NU-12. If you can find one, the Thermalright XP120 or even the XP-90 will also work quite well for that CPU. If you want to run 3GHz 24/7, there is no substitute for water cooling and the prices are getting reasonable for a very good water setup, and the results will amaze you. I ran my 165 @ 2.95GHz 24/7 and my idle was around 30C and the full load while running dual prime and many other tasks was 40C. With really good air, you should be able to keep it under 50C. Work on case airflow too as that is always worth a few C.