Evga Voltage Tuner

[BababooeyHTJ]

Actually you can.
But not with the tools that are publicly available.
The same way eVGA Voltage Tuner does it, just implemented in the firmware ( in simple terms "they use the same 'switch', the Voltage Tuner will more than likely be a 'apply each time you enter windows(automatically or not)' thing while the firmware (BIOS) way is permanent".

Can this be done with nibitor or some other bios editor?