varga,
Oops. That quote wasn't intended for you but Niccolò. The pic I posted regarding your card is valid.
The mod works by altering the VID-code bits found in the datasheet (page 12, table 2) - these bits dictate the base of the output voltage (vGPU). At stock your card has VID pin config VID4@1, VID3,2,1@0, VID0@1 = 1 0 0 0 1 = 1.125v. VID-pins are described on page 1. If we were to open (break) VID4 and close (connect) VID3 we get 0 1 0 0 1 = 1.325v.
But not all cards have such bits that can be altered. Such as reference design of 8800GT.
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