the photo may still be up
it was to remove as much heat as humanly possible from the classically hot X79 chip, so we had waterblocks on the front per usual, & modded these to be back, instead of the traditional backplate. I ran it at full tilt. My case is sound proofed. No clue on the real math. Mehlstaub did the math.
I think we measured another 2-3c from the chip, and 4-5c from backplate heat sensor/socket sensor. It brought down the whole package 2-5c depending on the section.
They're high quality server grade products. You can't go wrong, & they make a huge range of shapes/sizes/U thicknesses.