You could look at the valve been set to 1 gpm as the resistance of an artificial rad. I wonder what pressure drop the valve is equivilent to? Though changing the pump would throw that idea out of wack.
The biggest problem I have with the test is the difference in order between the PolarFlo and the split edge waterblock. On BillA's tests the spilt edge is 2C better than the PolarFlo while Joe's test has the PolarFlo 1C better than the split edge block. If the order of blocks aren't consistant on die simulators, then what chance do they have of being consistant on actual cpu's? If there is no consistancy, then what good is the data?
Another problem I have is that the temperature gradient across the surface of the cpu may be alot greater than with a die simulator. It may possibly even change patterns with different load programs. One block could perform better than another with prime95 and perform worse with cpuburn. I haven't seen any data that proves the cpu temp gradient is consistant.
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