E6420 / L651B728
Gigabyte GA965P-DS3 Rev. C2
CPU Cooler: Asus Silent SQUARE + Arctic Ceramique
C1E & EIST disabled
Stable:
1) 3.2GHz (8x400MHz) undervolted from 1.325v to 1.28125
Mainboard voltages are stock. Not set to auto, because the BIOS is automatically increasing them, but set to manual.

2) 3.6GHz (8x450) @1.425v
FSB +0.2v