Hi Sniper, with overclocking each computer is different indivually
it depends on airflow in the case, where the case is located, the temperature of your room/location.
It will also depend on if the
CPU has had overclocking disabled, or the motherboard doesn't support over clocking.
I'd suggest you get a tool called
ClockGen, and increase it bit by bit...if it starts to crash, then go down a bit.
This utility doesn't keep the settings, but it's real time, and you can do it in windows. So if you go too far, computer will restart and you won't have to reset your CMOS or anything like that.