Quote Originally Posted by SF3D
My 7900GTO overclock well enough. 720MHz (+50MHz delta) on air.

If you pencil that right 1.2K ohm resistor--> voltage will raise. Lower resistance=higher output voltage.

If you want you can try this mod:
Attachment 52295

Connect those two points (red line) with silver paint or something similar. Connection must be complete (0 ohm).

You will get ~1.45V in 3D mode. That's 0.05V over default. It might help.
Somebody tryed this ??
I get 750 stable on the core on stock volt and cooling so would be funny to see how far the core will go with a little extra voltage