So, my i7 960 would do 3.6GHz on stock voltage and not break a sweat.
3.8GHz at ~1.275
4.0GHz... is taking 1.375

This is all with stock 24 multiplier and just raising BCLK.

Thoughts?  VTT is 50mv, I tried bumping it a couple of times between ~1.35v and 1.375v and it just did not have the long term stability that simply raising vcore.

It's on water and I don't think thermals are an issue because with lower volts, the chip tends to just BSOD with a 101 at less than 55C load temps. 

I'm only now starting to try to lean on this chip a bit so it's fair to say that I'm new to i7 overclocking, so I'll take as much advice as anyone would like to offer, but at a minimum I'd love to see where other i7 960s are on clocks and voltage.  At the moment it feels like this is just a middle of the road chip that won't go very far but maybe I'm just missing something simple.

Thanks