That's a good way of looking at it. I totally agree.
My temp probe is touching the base of the block and the egde of the IHS, unless it moved, and reads -35 C right now which is colder than the coolant by ~8 C. My insulation seems to be working like a tiny freezer.
I don't have a hole drilled in my waterblock....or my F1EE for that matter. But anyways I'm pretty sure I got the probe where I wanted it.
Thanks Chuchnit