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Originally Posted by Goksly
Thinking about the most likely layout of the radbox, i think having a barb at each end, as you said, will make it harder to place.... so res->pump->pump->rad seems a good idea....but will it give as good performance as
........pump -> rad
res->....................>-cpu/etc
........pump -> rad
?
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Performence will be "better". In theory it does not matter where you place the pumps in a closed loop.
The pumps will push each other to the maximum flow rate. It is pushing power - restriction, no matter where you place the push or restriction.
That's theory.... practicly it seems to help to place the pump after the reservoir, and place the radiator after the pump to lose the tiny bit of heat the pump put's into the water. (with submerged pumps the heat of the pump goes all into the water)
It also seems to help to place the pumps right after each other, feeding one with the other.
I guess it comes down to the pressure, that is low at the beginning of the pump, and high at the outlet.
Water with higer pressure can generate more turbulence, more turbulence is better heat dissipation.
So you want to keep all restrictive parts after the CPU (and one of the best flow killers is the reservoir. The only right place for a res is to place it infront of a pump)
If you have a high flow radiator (like yours will be) dissepating the heat from the pumps will benefit above the loss in turbulance.