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MCP35X Little Flow

post #1 of 14
Thread Starter 
I sold a guy an MCP35X a month ago, and he is starting to have trouble with it now. When I used it, I had absolutely no issues keeping my single CPU loop + 240mm rad cool at 35*C (with AWFUL paste spreading). He is using a 280mm rad with CPU, MB, and RAM blocks, and it is not spinning his flow meter. He has a Swiftech Maelstrom bay reservoir.

During the filling process, he said it fills up very quickly. However, when the loop is filled, it appears the water is barely moving (slowly entering the reservoir), and the flow meter is not spinning.

Is the pump actually dying? Or is there something that I have not looked at?

Thanks.
post #2 of 14
When you say ram block you mean like OCZ Flex type of ram block?



I used to own these, they are the worst idea ever because there is a lot of flow restriction. If he is using a ram block like this it maybe the problem he has low flow. A ram block designed like this is a terrible idea. It's probably one of the worst regret buys I ever had.
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post #3 of 14
Thread Starter 
I will ask him. I know RAM blocks have terrible restriction, but I figured since he wasn't running much else in the loop he could be alright, esp with an MCP35X.
post #4 of 14
RAM blocks are extremely restrictive....and basically useless too.
So I say get rid of them, or at the very least run them in parallele.
4 RAM blocks IN PARALLEL would prolly be no less restrictive than a foot of tubing.
And mobo blocks can be restrictive too.
My next mobo blocks will be in parallel too.....but that can be risky.
Edited by PepeLapiu - 3/28/14 at 9:52am
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post #5 of 14
Yeah, mobo blocks and RAM blocks?
If it's all in series, it would be awfully restrictive.
Especially with 4 RAMs in series.
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post #6 of 14
Thread Starter 
Yea, I personally would never use RAM blocks. He's got a Bitspower 4 DIMM block.

Will pull it and see how it changes.
post #7 of 14
I've got a loop with 7 blocks which include 2 x EK MOSFET, 1 x EK MB, 1 x EK RAM block, Aquacomputer Kryos and 2 x EK 580GTX fullcover blocks in serial with a few 35Xs plus 3 quad rads. I've taken flowrate readings each time I added a pump. With a single 35X at full speed I was getting 2.4lpm (0.6gpm). I think I'd be looking for a blockage/gunk build up in one of the blocks.
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post #8 of 14
Quote:
Originally Posted by Big Elf View Post

I've got a loop with 7 blocks which include 2 x EK MOSFET, 1 x EK MB, 1 x EK RAM block, Aquacomputer Kryos and 2 x EK 580GTX fullcover blocks in serial with a few 35Xs plus 3 quad rads. I've taken flowrate readings each time I added a pump. With a single 35X at full speed I was getting 2.4lpm (0.6gpm). I think I'd be looking for a blockage/gunk build up in one of the blocks.

Well, if you were getting 0.6 pgm with all that, my guess is he would be getting even less. Probably somethink like 0.3 gpm, with those assumed 4x RAM blocks.

If I were going to cool my RAM sticks, I'd use EK blocks as they supposedly are higher flow.
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post #9 of 14
I was under the impression that the Bitspower blocks were a similar design to the EK ones?
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post #10 of 14
It sounds like he simply isn't filling the system. Very slow water movement is a symptom of a loop full of giant air bubbles.
A Bitspower 4 dimm block is a very high flow design. The EK version that is similar style is a lot less restrictive than a CPU or GPU block. No restriction plates or micro channels to deal with.

I have no experience with the swiftech res but has he got it configured properly?
Edited by Jakusonfire - 3/28/14 at 10:19pm
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