Well...ordering equipment for my company has it's advantages. Just had a Q6600 come in with a VID of 1.2375 and easily overclocked it to 3600 mhz with 1.36 vcore. In fact, I think I can go even lower on the vcore. It's an L810B if it's worth anything...

PS - My "other" Q6600 needed 1.4375v for 3600 mhz by comparison.