overclocking limits

[AivisLV]

Hello!
I have old pc and i want to overclock it..
So Celeron D 331 with original cooler and gaming temp is 64C° ..so how far i can push it? Without pushing voltage and it is stable
And can Core 2 duo E6600 survive on celeron D cooler?

 

[Woomack]

E6600 had about the same stock cooler as celerons. If you can use E6600 then forget about celeron. On the other hand I think you can make ~500MHz out of that celeron without bigger problems.

 

[AivisLV]

Tnx for info! I'll try to squeeze out +- 300MHz