i would say the new q6600 if u can get ur hands on it. should keep ur comp going a bit longer. also my q6600 seemed to o/c very well i think. @ 3.2ghz and very stable, and according to intel for the quad 1.1-1.4 v is stock so still running at stock voltage i think its 1.35. also idlinh bout 38/39 and load 55 highest