With those load temps being as they are, I believe there is something else at play. If the water cooling is an H50 or H60, probably better off with air, but I didn't see any mention of water cooling, but may have overlooked it. I am looking at moving to a Z77 MOBO myself, although I have the ASUS P8Z68-VPro now. Wanna do that before going to a GTX 680. : )
Die shrink will not result in less heat, essentially Intel are designed on efficiency, to create the higher frequencies means pushing the CPU out of the operation zone, IB is more efficient than the SB with the downside that it requires more to push it to that level.
A reviewer for OCnet that I spoke to suggests that the IB is a bit of a dog when it comes to overclocks, performance wise it is an improvement over SB.
So... here's what I don't understand. If it's better performance-wise but worse on overclocking, I'm assuming overclocking means it's a percentage. So say it overclocks easily up 1.0GHz, while SB overclocks easily 1.5GHz (hypothetically). The stock on IB is 4.0GHz, while the stock on SB is 3.0GHz. IB overclocks 25%, SB overclocks 50%.
IB would still be better in the end because of a higher stock overclock. Is this the case?
Basically, comparing the performance of the two chips when overclocked with a typical air cooler (Hyper 212 Evo), is IB better in the end? Meaning we would stop both chips not at a certain speed, but at a certain temperature. OC for temperature, is IB better, or worse?
I know that was kind of confusing, so I can try to explain it more thoroughly if you don't understand me.