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Originally posted by mad mikee
2. You want the max pressure into your CPUs (and if you are splitting this of course is even more true)
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Why would it matter? Do you think you'd get better performance if you pressurized the cooling loop to a few psi before operating the pump? Do you think your waterblock knows or cares what its inlet pressure is compared to the atmosphere?
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and while the flow may even out around the loop, there should be a point of max pressure / flow right out of the pump head.
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This is true, but I still don't see why you think higher static pressure will give you better heat transfer. It's higher flow rate that gives you better heat transfer, and this is determined by pressure drops across various components. Absolute pressure in any single point in the cooling system is irrelevant.
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Also you take a flow/pressure hit in every block (think of smashing into brick wall and then reversing direction). 2 of those in a row will slow down the flow more than 2 in parallel?:shrug:
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It is the nature of flow resistances that two flow resistances in parallel will cause an overall pressure drop *less* than two flow resistances in series. This means that putting them in parallel will make the flow rate through each block more than half the flowrate that would go through the blocks if they were in series.
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Lack of sharp turns is very good.
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Absolutely.
Alchemy