Where this becomes confusing is what is required to push 6lpm through the -U vs. the -UH. Assuming that the HardOCP review's numbers were not just fabricated or random due to mounting variability, they showed that with Eheim pump and BIX and 1/2" tubing (can someone clarify which Eheim?) the -UH produced a slightly lower CPU temp. Certainly this could be in the margin of the test error, or it could also be true that with hobby pumps the -UH may result in lower temps when in a complete system. From a heat tranfer theory and from wb design standpoint, however, it is a poorer wb.
I would assume that you could extrapolate from the combination of pressure drop and C/W data from Bill that the -UH modified with the Swagelock fitting on the inlet would be the clear performance champion in a typical w/cer system.
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