Today I put my new E6600 retail chip in my Intel D975XBX rev 304 motherboard. Before I had an E6600 EA (A1) in there. I did the debug mod a while back, so I could adjust Vcore on the A1.

Well, now with the retail E6600 I can set Vcore, but it stays at defualt regardless of what I set it to. Strap fsb does the same. I'm using bios 1334, but I've tried 1304 and 10xx with exatcly the same results.

Anybody have a clue? Or similar experiences?