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Originally Posted by Uncle`BuZZ
The graph you put here isn't an evidence of your argument : the constant in the test is the coolant/air differential, so when you put more water into the radiator, you put more heat, so it is evident that radiator dissipated more heat. It doesn't mean than the radiator has a better efficiency with more flow !
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I think you need to read the source article:
http://thermal-management-testing.com/ThermoChill.htm
Radiators do improve in efficiency with increasing flow rates.
This fact invalidates the following section of your response.
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We need same graph but with a constant power as a CPU will put the same power in water in a high or a flow rate. So the coolant/air differential will increase when flow decrease...
And the EHEIM1048 and 1046 are used for low flow since they are quiet and resistant, but their PQ curve aren't really good for high pressure. Try the same test with the Laing DDC and D4 (maybe results will be the same, but I dont think EHEIM are representative of good pumps for high drop pressure)
EDIT: sorry if this point was already discussed, I realize I havent read half of the topic yet !
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