My C2D @ 3.6 (1.45vcore) runs 42-43c (im LAPPED). was running 55-59 before lapping both CPU and BLOCk.
Some tells that lapping the block is not a good idea, but it depand. My block and cpu was concave, so imagine the bad contact between them !!! Ive win my game VS the heat. My temps are nice for the Vcore im using. ( 65 nm cpu use more V )
Your fine with those temp. But im the kind of guy that alwais want more ... you know !
the apogee GT is supposed to be a bowed block ( remember when you first had it, in the box, you have a bigger O-ring that can be used to make it convex. The stock one is supposed to be give a FLAT block. Unfortunatly, mine was concave ... so i lapped it ! haha 😉
Take a blade (razor blade), something your SURE its FLAT and look if there is a gap in the middle or only the middle touch and the edge dont or if its perfect flat Convex is not bad, but with a quad is would like to have a flat base coz the CPU oare side by side. In a DUO the cpu is in the middle of the chip.
My Q9400 at 3.8GHz was staying under 50 with air cooling, but I didn't run it quite that long. Are you able to reduce the voltage and stay stable? Nothing wrong with the temps you have but it just seems like it should be lower.