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Difference in 2 pumps vs dual pumps. - Page 3

post #21 of 26
Thread Starter 
Double posting because its my thread LOL

Anyone have any experience with this tubing?? Seems perfect for what I want but is expensive, as in 69 cents for Durelene, and 3.55 for Tygon
Edited by goodtobeking - 11/27/12 at 7:24pm
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post #22 of 26
Quote:
Originally Posted by goodtobeking View Post

No the pumps are in series. I understand what you are saying though and sounds correct and pumps being in parallel. The only thing in my loop is the GPU blocks. And the way they are done the flow restriction on both should be equal.
Tests have been done and these computer water pumps have almost no restriction when not running, as if one fails and only one pump still works. I dont have the link to martins test page, but he did very extensive testing with pumps in that manner.
But just for the giggles, I will be testing myself to see the difference between running one pump on and one off, and both running obviously. And gonna love the PWM feature. I will be hooking it up to my MOBO, so I can hook up my 5 PWM fans via a splitter to my Aquaero and at low temps when computer isnt running above idle the fans will shut off completely. But thats another story.
Back on topic, I guess im going to jump on some durlene tubing for my rig. Until this epidemic passes and I can find proper tubing

PWM controlled fans don't stop when PWM control goes to minimum. They run at at minimum speed if they get minimum control signal and if you stop feeding them that PWM control signal they run on full speed.
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post #23 of 26
Both the new PrimoChill Advanced LRT and XSPC tubing work quite well and have been tested not to color by Mayhems. However, the newer PrimoChill has not been tested for a long time since it is still quite new. I am using the XSPC tubing and seems great.
post #24 of 26
I have 2 rigs that have dual pumps. One is an XSPC Twin D5 Dual with 2 variable pumps on a dual bay res, the other is an EK Dual Top with variable D5 pumps with a screw on res.

They both work well and serve their purpose (one is a built in system, the other is on the side of an external radiator stand). I prefer to have both pumps in the same unit because it makes wiring them much easier, is more compact, and since I typically run very low restrictive radiators (usually RX360's), I don't have to worry about spreading pumps out.

I used to use Primochill tubing and after 11 months, tore it down and replaced it with Durelene. The Primochill didn't have any problems at all, but I wanted a change. Newest rig also uses Durelene. One of my other rigs has a single D5 pump/bay res and uses stock XSPC tubing.
Edited by 47 Knucklehead - 11/28/12 at 4:58am
post #25 of 26
Thread Starter 
Quote:
Originally Posted by mm67 View Post

PWM controlled fans don't stop when PWM control goes to minimum. They run at at minimum speed if they get minimum control signal and if you stop feeding them that PWM control signal they run on full speed.

Ahhh, did not know this. Oh well, 600RPM is quiet enough I guess lol. Really thats a good thing thinking about it.

And thanks for the info on tubing guys, but I still cant figure out which tubing I want exactly. The Tygon is pretty much exactly what I want, but expensive. Durelene is recommended and cheap. Maybe I should get 10 feet of durelene, and like 3 feet of Tygon silver. That way I can check it out in my rig in person before I jump fully into it. I have a second rig that I may be water cooling soon, so the durelene would not go to waist if I decide to switch out for Tygon...Just thinking out loud, still not decided yet
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post #26 of 26
Thread Starter 
I got the MCP35x2 and its heatsink mounted in my case. thumb.gif for how the mod went for mounting it. Only downside is that I had to use 2 45 degree adapters to connect it to the 200mm radiator, which was connected by Bitspower Sli fittings with a crystal link. It sucks because the 45 adapters I had I dont like to use because they only have like a 3/16 hole in them for the flow. So will switch them out ASAP. With the MCP35X2 running now I am only getting .8 gal/min of flow according to my Aquacomputer flow meter, at full speed. At the lowest setting I get .2 Gal/min. Not very happy with the improvement, but I hope it changes once I get rid of those 45 fittings.

I also bought 8 feet of tubing. 4 feet of each Primochill Advanced clear and Tygon Silver. Worked out great, and looked just like I had wanted. Primochill Adv clear is very nice a clean/clear so far, time will tell if they solved the cream cheese issue. Worked great with compression fittings. Tygon Silver looks very slick and has antimicrobial built in, but didnt work well with compression fittings.
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