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Pump speed

post #1 of 6
Thread Starter 
Question on loop coolant speed. I'm using two MCP 655 w/ speed control in tandem, 2 x GPU blocks, CPU block, 1 x 360/1 x 240 radiators, and a 250mm res. I'm currently pushing 4 liters per minute or so the flow meter says. Is there a norm for lpm? Just trying to gauge whether I should or could slow them down a little. At idle I hit somewhere around 24-26c and really never seen temps above 36c under stress. Trying to find an optimal setting. Thanks
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Orange Slushie
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post #2 of 6
You should maintain 1 gpm = 3.7 lpm which is optimal. I'm running my dual mcp665 with speed 3. I've got cpu block, mb block, gpublock, 250ml res and 560 rad. And many 90 degree fittings.
Edited by Sammyboy83 - 3/24/13 at 1:16pm
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post #3 of 6
Turn it down until you notice your temperatures starting to increase. Seems like the most simple way to me. tongue.gif
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post #4 of 6
I can see turbulence of the water in the 250ml res. Maybe there is to much flow?
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post #5 of 6
Run it on 2 or 3 seems to be the best setting.. don't think it affects the temps that much either. Mine makes weird humming noise wen running on 2 and runs smooth on 4.
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post #6 of 6
Thread Starter 
Thanks for the responses.

Just made a few changes to my loop and decided to turn the speed up a little. Was running at 3.4 lpm.

@Lowfat: I doubt I will see to much difference in temps if I lowered the speed too much as I'm not a power user as some. Just looking to see what an optimal would be to increase the life of the pumps and maintain decent temps.

@Sammyboy: I have the 250mm version just for the fact I would get a little turbulence in the res for show. I have the EK Multioption Res X2 Advanced. This thing is great. Too bad EK quit making this and moved to a basic RES X3 version, which I view as a move to normalcy with most other reservoirs. Really nothing special about it compared to the 2nd version. My res has the option to choose between three different internal tube sizings. I have two inside the res, in and out. I did have the longest of the three as the intake tube but switched to the mid size. Good thing too. If I were still using the longest tube, It would be out of control with speeds higher than 3.5. Turbulence would be an understatement.
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Orange Slushie
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