Pentium 4 631 Voltage? New to CPU overclocking

[extremepilot]

I have a Pentium 4 631. I overclocked it from 3.0ghz to 4.0ghz with about a 0.1125v increase and 0.125v increase to the northbridge. Is this good? I read a review of the processor on newegg -somebody recommended adding 0.2v to the MCH before oc'ing.
I have not even a general idea of how much of a voltage increase I should be doing for such an overclock.
Also, I used some divider to keep my memory at 800 - it's ddr2 800 at stock speeds now.

 

[beurling]

If your system boots, doesn't hang or freeze, then it seems it was successful.. You can stress test it with programs like Orthos to be certain that it is stable.

 

[Evilonigiri]

You should read the Core2Duo guide to get a general idea on OCing. Although the guide is meant for the newer cpus, the same procedures apply.