8800GT voltage mods

[jason4207]

Sorry, my fault, thought you wanted my card original bios This is the bios i'm using, it's an EVGA bios and it's set to 1,4v but really it give 1.25v-1.27v (guess this is the maximum for bios mod). Checked with multimeter of course.
http://rapidshare.com/files/105335152/evga14.rom.html

Anyway have you got a clue why a card wouldn't overclock? It seems like additional voltage does nothing at all! At stock it does 700mhz, with mod still 700mhz. If i go further 3d mark will crash, and crysis too. I checked with a damn multimeter and the volts are there, i can't understand this ******* card. I flashed the moon in there too, and still nothing. Could it be an overheating problem? The gpu is on WC, but the rest of the card is totally naked and no fan on it, but i don't think heat (and just on the pcb, couse gpu is fresh) is able to reduce this much you oc, is it?

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.