What's a good temp reading for CPU at idle & load when o/c?

[Sato]

I use Asus probe for monitoring and temp are around 30-35C (idle) & 45C (load) prior to o/c my p3 866.
also when do you know your CPU needs more voltage?
Is fsb 133:133:33 jump to 140:140:35 rquired change of vcore from 1.70v?

 

[MCS]

P3s run cool by nature, and are not tolerant of high temps. I would not like to see a P3 go much higher than 45C. My P3-600 @ 800 and an Alpha cooler hardly ever went over 35C full load.

You need to give your CPU more voltage if it is not stable when overclocked.