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Single or dual pump?

post #1 of 10
Thread Starter 
Hi all,
So finally got me a new case, 800D, got two radiators HW labs gtx 360 and gtx 240, and have my trusty MCP655. I also have a XSPC dual bay reservoir that I would like to keep.
I want to run a single loop, with apogee xt CPU block and 2X evga gtx 580 hydrocoppers SLI on it. It seemed silly separating the loops as a 360 an overkill for cooling just the cpu(especially with 110cfm fans I am using) and gtx 240 might be a tad small for gtx 580s. SO I figured put them both in one loop:
pump->gtx360->cpu->1st 580->2nd 580->gtx240->res.

Cards are at stock speeds, CPU is i7 950 @4.4Ghz.

Now if I do need two pumps I would liek to use something like:
http://www.frozencpu.com/products/12480/ex-res-254/Koolance_RP-452X2_Dual_525_Reservoir_Serial_or_Parallel_for_1_or_2_Pumps_RP-450_Laing_D5_MCP655-B_MCP655.html?id=YyGH9oXT

But I am not sure if that reservoir allows both pumps to be used in the same loop or not...

Any help or advice would be much appreciated. Thank you!

-Davit
post #2 of 10
That is a good choice and yes it does allow them to be set up in series (both pumps running in same loop)

And if you are uninterested in using a bay Reservoir you could also pickup some UN Pump Mounts and some connector fittings and run your pumps in parallel like so...

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post #3 of 10
Thread Starter 
Quote:
Originally Posted by werds;13447758 
That is a good choice and yes it does allow them to be set up in series (both pumps running in same loop)

And if you are uninterested in using a bay Reservoir you could also pickup some UN Pump Mounts and some connector fittings and run your pumps in parallel like so...

Thank you for your reply, that is a good news on that reservoir!
I am a big fan of those, they just seem to have a cleaner setup overall, but a premium price of course.
No as to first part of my question, do I need two pumps for 360 and 240 rad, or can I get away with running just one???
post #4 of 10
You can get away with one good solid pump as long as you don't have too much restriction in your loop. But I am a huge fan of 2 pumps in series in a loop. My first and current loop uses an XSPC bay reservoir with a single pump... when I first got it the pump failed within a week and then I had to waste time waiting for a replacement pump from RMA and tearing down and rebuilding the loop.

My new build will use pumps in series this way if one pump dies the loop can still be run until I replace the dead or dying pump smile.gif

Redundancy so there is little to no down time is a preference.
    
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post #5 of 10
Thread Starter 
Yeah, that is a very valid point! I didn't think about it that way. Though without some sort of a pressure or flow meter it might be kind of hard to say if pump failed I guess...
But dual pumps it is, thanks man!
post #6 of 10
The Koolance reservoir you linked is nice. I have the DDC pump version of it with two MCP35x pumps set up in series under PWM speed control, but limited to 50% speed.

Koolance has a crossover pipe kit for it to series the pumps if you want to cut down on the number of tubes.
I ended up piping my pumps into different parts of the loop, but still in series. Separating them with some pressure drops made the DDC pumps quieter, they sometimes developed an unpleasant harmonic with one pumping right into the inlet for the other.
I don't think that will be an issue with D5 pumps though.
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Grog
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RAMHard DriveOptical DriveCooling
Corsair Dominator GT Velociraptor 3000HLFS Lite On DVD burner EK Supreme HF 
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AquagraFX470 EK FC-88 Koolance RP402x2 MCP35x pumps 
CoolingCoolingOSMonitor
Phobya Extreme 200 and Quad 480 radiators. 9x Akasa Viper fans Windows 7 Ultimate Old LG Flatron 1680x1050 
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post #7 of 10
Thread Starter 
Man you guys are great!
Caleal I found exactly what you were talking about:
http://www.koolance.com/water-cooling/product_info.php?product_id=1109
Only $13, not bad, I guess a little more since I need to buy another pump, but seems like a good investment. Plus rep to both of you.
post #8 of 10
You should use 7 pumps. It will be "dope".
post #9 of 10
Thread Starter 
Quote:
Originally Posted by Full_Tilt;13450177 
You should use 7 pumps. It will be "dope".

Is that your settle hint at the fact that 2 pumps are overkill my good sir? headscratch.gif
post #10 of 10
Thread Starter 
Ok Fellas I have more questions.
First one, do I need one or two sli ribbons to connect the gtx 580 cards?

Second one is where do I get one of those SLI blocks for the 580s? You know the ones that sit on the side... I think some of them are serial some parallel. I am confused as it is and can't seem to find them...
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