I am trying to O/C my dad Pentium 4, stock speed is 2.66GHz I have managed to get it up to 2.7 but i feel that i could get it alot higher if only i could change the clock multiplier, The mobo is an Asus P4S800 and I cant find any way to enable the changing of it, anyone have any thoughts on this one please

Do you know if your P4 has a Northwood or a Prescott core?

Have you tried upping the FSB - if you are careful and only raise the FSB by single points each time - followed by testing - you can gain a very nice speed increase over all.

Also, have you updated the bios to the very latest version? http://www.asus.com/products4.aspx?l...77&modelmenu=1

It is the northwood core

I managed to get it upto about 2.9 at the post screen but when it booted up XP it just restarted.

i'll update the bios and try again, i'll let you know how it goes

thanks mate

P.S. it was the P4S800 MX and not the P4S800 MX SE

Sorry dude, as far as I'm aware, you can't unlock the Northwood core multiplier...only the Prescott

ok well at least i got the bios updated

thanks anyway hengis

Ok, well I'll leave this topic open just in case anyone else has something to add.