Image 5. Extreme Vcore Modification (not recommended for those not using LN2)
A special thanks to TAM and all the members of Team Japan for their work in creating this modification!!!
Complete
Image 3. Vcore "Modification" - unlocked BIOS for ALL chips before making this modification. That step allows selection of 1.6v by BIOS (~1.565v real) for the CPU. This is more than enought to carry most users to maximum clock with their Conroe CPU. If you have more exotic cooling (read: LN2) then complete this modification and the one below, if desired, to allow for manual temperature offset.
Mod: Connect a 50K ohm potentiometer (set at maximum resistance) rrom Pin #4 (red points) of ADP3189 to GND. Lower resistance to increase Vcore. This allows for ~0.2v increase over BIOS values (~1.75v real) at 6K ohm. Lower settings cause a shutdown on voltage protection (a modification is being worked to get around this). The green dot shows the measure point (to ground) for Vcore.
Note: This mod can be done on the newer rev. 304 board also!
http://u-san.net/c-board/file/D975XBX-ADP3189.jpg