Quote Originally Posted by STaRGaZeR View Post
Yeah, I know how Vdroop works, and I really donīt want it. Stable voltage is best for us XS members. Asus, DFI, Gigabyte... must implement an option in the BIOS to let us rock stable voltage under load, or a max of 0.01v~0.02v, like CPU Voltage Damper does in lastest Asus boards.

I measured it with the Smartguardian utility, didnīt know how to read it with a multimeter. Anyway, SM confirms what I saw in my tests: with the same CPU, Asus and my current Intel board behaviour is the same. Both measured with a well calibrated multimeter, after vdroop it needs 1,19v to a stable 3.3Ghz, a little OC. With the iCFX3200, 1.35v in BIOS resulted in a 1,28v idle (no problems here, typical Vdrop), but at load, it dropped to about 1,20v. At that voltage it should be stable like it was on Asus and Intel, but it wasnīt, 1,25v or 1,30v didnīt fix it. Even at that low OC, that huge voltage fluctuations kill the stability. I played with the iCFX for about a month, trying to understand what I was doing wrong, but honestly, I think that the problem was a faulty board or something, not me. I really liked all the BIOS options, great board, but the voltage related stability issue forced me to get rid of it.
There is Vdroop disable circuit in some of our P35 board , we will put this circuit in all future board with Digital VRM(except AMD board , AMD does not define clear Vdroop design guideline in their power spec) ...

SG utility is not calibrated unlike your reading in bios ... We have ask ITE to give us SG source code , we are working on it and try to see if we can make it more close to BIOS reading(which is calibrated) ...

About how much voltage to have stable over clocking result , I think it's vary from single board to another(even the same model) , so I can not comment too much what's the real reason you can get stable oc as other board unless I can get them and test by myself to see what's the possible root cause ...