Voltage Options:

CPU VCore up to 1.7v:

CPU PLL voltage up to 2.78v:

FSB Voltage up to 1.5v:

DDR3 Memory Voltage up to 2.78v, like CPU PLL. Perhaps it is generated from the exact same regulator.

Northbridge voltage up to 1.91v:

Southbridge voltage up to 1.2v:

Clock overcharging voltage, maybe something to do with the clock generator:

CPU Voltage Damper to adjust voltage droop according to load:

CPU GTL Reference voltage derived from FSB voltage:

CPUZ Screenshot:

At default voltage, the Intel X38 chipset only runs slightly warm without a fan on it.