Yea the 384x B batches are infamous for being monster overclockers. Nice chip you have there btw What's different about my chip is that it's a A batch but has crazy overclocking potential.

I need to edit my post actually, my 3949A372 runs 4.0GHz at 1.18v vCore and 4.2GHz at 1.25v vCore...very similar to your chip.

I also had a question about i7s and the individual core temps. For me I see a 5-6 degree difference sometimes between the #0 and #3 core. Is this normal? I have seen screenshots of other people's i7s and some have this pattern while some do not. At first I thought it had something to do with a component on my motherboard that was heating up a certain section of the heatsink. But I think it may just be normal right?