Just near Southbridge if you need more than 1.95v PLL:

You can use pencil or a 10K ohms VR. For 10K ohms VR set at 10k ohms first tune down for more voltage.
MCH GTLRef AKA FSB VRef & VFSB Swing

Beside chipset. Set at Max resistance and tune down to increase voltage. Both voltages are derived from CPU VTT - Default = MCH GTLRef ~ 0.66x VTT, VFSB Swing ~ 0.25x VTT.





Linear Mode
21 OCZ Fans!