Just noticed something on BIOS G13.
In the CPU Voltage (Vcore) setting, in the description box on the right it says "Default value is 1.260V", on the other side the "Target CPU Voltage" field shows 1.160V with the Vcore offset ( setting ) at "Default"
And the trend goes on with any increase.
I checked the Hardware Monitoring page and saw 1.6V reported while the target CPU Voltage in the settings page was 1.5V
I'm gonna rotate the board to have easy access to the measurement points to check it out.

If the HW Monitoring page is correct, then I was running CineBench 10 x64 at 4.3GHz @ 1.6Vcore on a Ultra-120
Poor i920