Nice going easy, but it does show the limitation of the co chips mate, your watercooled temps are as high as my do on air at 4.0ghz, ive acually got mine down to the high 60's through using 2 x 2000 rpm fans on my TRUE black, far to noisy even for me and im half deaf. All the same matey, welcome to the i7 4ghz owners club.
The C0's do need pushing but the cost v performance is just ..well...ACE
Looks like I will be settling for 3.8ghz at 1.325v @ 53-55 full load. This is with my fans on silent on my loop. Very quiet
Any more mhz needs too much Vcore to be viable 24/7
I will look at drawing this vcore back now..not that temps are a concern but the less vcore the better.