Adjust chipset voltage on P35 chipset

[Jonas_ACJ]

I'm UNDER-clocking my PC, and I'm looking for a program or mod, where I can adjust the chipset voltage below the original 1.3v, but I can't seem to find any programs... help anyone?
Motherboard: Gigabyte P35C-DS3R

 

[Outlander_04]

look in the BIOS of your mb .

it should be possible to enable manual adjustment of voltage and then reduce the figure