Well... I am on the test rig now. The room temp is 79 F, and with the Vcore at 1.90/1950MHz the temp is showing at 46.5 C. This is right after running demo loops of 3DMark2001SE. I turned my AC off so it would get warm in my office. I will turn it back on and let the room cool down, run some more demo loops, and post the temps. So far I am impressed with both the Phaze II and EPoX..
EDIT: For deep narrow passages, this block really flows. I have never seen my reservoir flow like a vortex with the Maze 2, Spir@l, or High Flow Gemini.
EDIT 2: I am only using a single 120mm Panaflo fan (case side cover is off)....Very quiet.