I done a M2F mBIOS a while ago, it should still be in this thread somewhere. I've got up to 501FSB on my P5Q Pro so far, 515 wouldn't get into Windows, but I may be able to get it stable.

@ Sakai; 508FSB is pretty high, it may well be thats your FSB wall. For a E7200, thats a high FSB. I'm not sure I would run 1.47v through it 24/7 though unless your trying to kill the chip.