Quote:
Originally Posted by kangyu
He would get better temps putting the two radiators in parallel. Lower back pressure, higher flow, longer time in the radiators.
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Wat?
Overall, flow rate may increase slightly, but the flow rate through each rad will be halved, and lower flow rate = less heat transfer (less turbulance).
And the water spends the same amount of time in the rad(s) no matter what the flow rate is. With a lower flow rate it stays in the rad longer, but doesn't come back to the rad as often.
See:
Watercooling Myths Exposed