I need to find the core voltage read point for the plain jane 6800.

not the GT or Ultra, just the 6800.
I am fairly sure I found the mem read spot, it's just the big caps like the ones on the 5900 had, so thats easy to read, and it shows 2.7 volts every time.
I am not certain this is the read point, but it makes sense that it would be somewhat like the 5900 read point.

thing is, I can't find anything that seeems like a Core Read point.
I found a few spots that read 1.2 but none of them change when the card goes into 3d mode, so I don't think I have the right spot yet.

anyone know the voltage read points of this card?