I've the same problem with Asus boards
With 780 DC2 i've put to GND with a trimmer the 0v, is less expensive then buy a oc pannel.
Yoou can find some tips here http://kingpincooling.com/forum/showthread.php?t=2346
It IS mandatory to remove PGR100, for go above 1,35v
the mod is the same even with Ti DC2