8800GT voltage mods

[Niccolò]

What is your DMM reading when you use the stock BIOS?

I think your reading the voltage wrong, or your DMM is messed up. Which ground are you using? Try one on the gfx card PCB itself.

I think the fact that your not able to clock any higher means that your not actually increasing the voltage through the BIOS like you think you are.

No one else can change the voltage above 1.1v using the BIOS on a reference design, so I don't know how you would be able to.

...


Alright, I've checked out your BIOS, and you have done the same thing that many people tried a while back. You are changing the VID labels. This does not change the actual voltage. VID03 will always equal 1.1v even if you change the label to 1.4v. The label is for our reference. The gfx card could care less what we want to call it. All it sees is VID03, and it sets the voltage to a predetermined voltage based on that. To get any higher you would have to have a VID04. It is possible to add VID04, & VID05 to the BIOS (there's room in the code), but the card doesn't see anything above VID03 no matter what you do. [It's probably 2-bit, so it can only see 0-3.]

Most reference design cards come w/ VID02 set, and you can change that to VID03 to get an extra 0.05v, but that's it.

Man, my DMM was messed up! Actually, i only had to change batteries to it That really makes me happy couse it means it's only a volts matter. Now it reads correctly and i have 1.03 idle and ONLY 1.06v load
That's the explanation for my poor overclock. I'll be hardmodding as soon as i get a soldering gun, cos mine is more like a soldering cannon

[Niccolò]

I don't understand why a pencil mod is not possible. This mod is made on the FB pin, is it? Can't i reduce the resistance that's already there?