PMP-500 serial vs Parallel

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camivill
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PMP-500 serial vs Parallel

Postby camivill » Thu Dec 06, 2012 2:56 am

Wanna know any input on these two configs:
1. RES--->PUMP--> RAD1---> split x2---GC1/ GC2 --->join x2 ---> RAD2---->Splitx3 ---> CPU/ NB/ MVRx2-----> res

2. RES---> PUMP---->split x 2--->
a----> RAD1 ----->splitx2 ---> GC1/ GC2--------->c
b-----> RAD2 ----->split x 3---->CPU/NB/MVRx2------>d
C&d join together back to reservoir

In conclusion is better serial or parallel system....

Izerous
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Re: PMP-500 serial vs Parallel

Postby Izerous » Thu Dec 06, 2012 10:00 am

To do parallel loops you really have to make sure that the resistance on both sides is equal if you want equal cooling. If one side is really resistant and the other is not such as

Splitx3 ---> CPU/ NB/ MVRx2-----> res

You CPU block is very restrictive and the other 2 are not in comparison, so what will happen is you will get the most fluid flowing through the non-cpu block routes and it can cause your CPU temp to go up.
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2xPMP-450S > Amd FX8370 > Asus CH4-EX > AMD 6990 > AMD 6990 > 2x1080 rads > return
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camivill
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Re: PMP-500 serial vs Parallel

Postby camivill » Thu Dec 06, 2012 9:14 pm

Thanks.
I figured it out, as i have currently this setup
PUMP---> split x4---> GC1/GC2/NB/CPU----->Jointx4--->RAD...
I played with the tubes and I can see the flow is not moving much for the CPU...

SO i want to change the configuration.
Even if parallel will give a "cold" liquid to the CPU, the flow is bad....
IS there any way of fixing the "poor CPU flow" in a parallel system?

Izerous
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Re: PMP-500 serial vs Parallel

Postby Izerous » Thu Dec 06, 2012 9:49 pm

To keep it parallel you have to increase the resistance on the NON-CPU paths.

Now the question is why bother making 4 paths in the first place. If you doing expecting the liquid to be colder because it hasn't flowed over the other components honestly the effect is negligible in most cases. If you were dealing with identical blocks IE 3 GPU block balancing the flow is cake, doing what you are doing is making it more complicated than necessary.
Corsair 800D
2xPMP-450S > Amd FX8370 > Asus CH4-EX > AMD 6990 > AMD 6990 > 2x1080 rads > return
32GB Ram

davidm71
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Re: PMP-500 serial vs Parallel

Postby davidm71 » Mon Sep 07, 2015 11:41 am

Hi,

Was wondering if the Pmp-500 can handle having its flow split with Y-Adapter such that u have:

res -> pump -> 280 rad sr-2 -> 360 stealth rad -> heatkiller IV -> return to res
-> 240 rad -> sli gpus (980 ti's) -> quick disconnect -> return to res

Thanks

Izerous
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Re: PMP-500 serial vs Parallel

Postby Izerous » Tue Sep 08, 2015 11:18 am

The PMP-500 has more than enough power to handle a parallel flow, but my previous comments still stand that you need a balanced restriction to have balanced temperatures. It also is not clear from the above where you intend to split the loop.

And while I'm not one to talk about radiator overkill plumbing in 3 separate radiators might prove annoying especially when it comes to bleeding everything and the design of your case.
Corsair 800D
2xPMP-450S > Amd FX8370 > Asus CH4-EX > AMD 6990 > AMD 6990 > 2x1080 rads > return
32GB Ram


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