Originally Posted by nirianto
I use CPU VID 1.325v with overvoltage of 0.2v. I got a reading of 1.52v on the BIOS Health page. I never had any issue going over 1.5v. Which BIOS are you running again? Im running the BIOS dated 1/13/09. As for OS, are you running on 64bit or 32bit? In my experience, it requires slightly less voltage to be stable on XP than Vista. Also, you'll get higher OC with 32bit (ie. In 64bit OS u might need more voltage to be stable than in 32bit OS).
Regarding NB voltage, my CPU-NB is VID voltage (1.325v) and Chipset Voltage is 1.3v. I use HWMonitor to get readings. As long as your +5v and +12v are hovering around 5v and 12v, I think its fine.
I upped my voltage to 1.488v and CPU to 3.5Ghz.
In my case I did my stability testing on Windows XP Pro 32bit.
Now I have a dual boot setup of Windows XP Pro 32bit and Vista Ultimate 64Bit.
So if what you are saying is correct, I might need more voltage in Vista then I do in XP.
Yeah, I am using the modded 1/13/09 BIOS from rebelshavenforum, so should be same as you.
My overvoltage is +0.175v, but using the next highest setting still showed as 1.488v on CPU after reboot when I tried a few months ago. And just tried again with +0.187v, but after save and exit, CPU in volts in hardware health configuration still showed as 1.488v. And another thing to note is I am using the on-board video for now, could that create overclocking problems?
On a side note, I also have a Intel Q9450 system that I am trying to get stable. Clocked to 3.5Ghz too.Edited by hexcode99 - 9/4/09 at 9:40pm