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Lane based waterblock questions.

post #1 of 5
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So it's a fairly well known fact that after one 1 GPM diminishing returns kicks in for waterblocks, and at 1.5 GPM any further flowrate has next to no impact for PC cooling. Well I was wondering about lane based waterblocks, like the Raystorm, Phobya UC-1, Koolance 380i, the Heatkiller, and the EK Supremacy.

http://i.imgur.com/CjTZ9l.jpg

They inject water into the center of a lane based block, so the flowrate of each side of of the block will essentially be halved. Does this mean diminishing returns wouldn't kick in till 2GPM with a 3GPM max?


Anyone with firsthand info or links please give input biggrin.gif I'm curious
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post #2 of 5
Thread Starter 
*bump*
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post #3 of 5
I don't have any links for you, but your initial assumption about there being a particular value of GPM after which extra flow gives negligible temp reduction is not entirely correct. You need to think of flowrate v temp more as an exponential curve. So yes there are "diminishing returns", but it's a gradual effect, not any kind of cut-off point.

Furthermore, you can't assume that just because all those blocks you mentioned have a particular architecture, that they will have less pressure drop (restriction) than non-channel blocks. Nor will they even have similar pressure drop to each other. Each of the blocks you mention will have its own pressure drop v flowrate curve.

Generally what you do installing your loop, is try to find the highest rpms for your pump that are acceptable temps v noise and don't worry about exactly what the flow rate is.
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post #4 of 5
Those are the waterblocks that the whole 1.5 GPM figure was derived from.

Many blocks will not even physically allow a pump to push 3 GPM through them even in a CPU only loop. A 35X might just do it on some of them, but with nothing else in the loop.
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post #5 of 5
Thread Starter 
Quote:
Originally Posted by Jakusonfire View Post

Those are the waterblocks that the whole 1.5 GPM figure was derived from.

Many blocks will not even physically allow a pump to push 3 GPM through them even in a CPU only loop. A 35X might just do it on some of them, but with nothing else in the loop.

Ah, I see XD
Thanks for clearing that up tongue.gif

The MCP35X2 would probably do it tongue.gif that things a beast. The real question is why would you want to? XD
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