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First (planned) loop - Need your advice guys

post #1 of 10
Thread Starter 
I'm planning to buy this kit and will be adding another XSPC radiator.

http://www.frozencpu.com/products/11...l=g30c321s1310

Here's my draft diagram;



I just have some questions regarding this draft loop.

1. Do I really need the 2nd 120 rad after the CPU block? Just from my imagination, it would be great if I get fresh water going to my SLI setup.

I've been reading WC threads and checking pictures and I have not seen someone (maybe I did missed it) who does this kind of setup.


2. Based from the reservior/pump combo. Is this going to affect the flow rate since it's going thru another rad before going out to the GPUs.

3. Is it worth getting another pump for the 120 rad? I'm still figuring out if ever I do get another pump, where I am gonna mount it? - based on my draft loop since the rad is in the rear side.


I appreciate your time looking into this and will accept all suggestions.
post #2 of 10
looks like a good plan, although what Graphics cards do you have? that will determine if you have enough rad space for CPU and two GPUs. I would recommend a 3x120mm rad in the top if you can make it fit.

1) it will help, I have a similar setup. (although I have a total of 4 rads)

2)you will have no issues with flowrate with that loop. however, I would reccomend buying all your parts seperate and getting one of the bay res's that uses an MCP355 pump instead.

3)just stick with a single pump, multiple pumps can cause issues...
post #3 of 10
Loop planning looks good.

1. It's not necessary to have the RX120 between the CPU and GPU but it will help to dissipate some of the heat dumped by the CPU before the coolant hits the GPUs. At most I would anticipate a few degrees difference with the RX120 installed.

2. Yes, adding a radiator to your loop will affect flow rate. Most current-gen rads aren't very restrictive though, so don't sweat it too much. I'm not too familiar with the Rasa kit pump but from what I've read, it's not the best. I would do some more research about it's capabilities before attempting to push dual rads, CPU and dual GPUs.

3. If you do run two pumps in a loop, they must be identical to avoid premature wear on either unit. If you are thinking of adding a second pump, I would seriously consider selling the Rasa pump and getting one single powerful unit (355, DCP 4.0 or D5/655) that would be sufficient for the whole loop.
At long last...
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CPUMotherboardGraphicsRAM
920 D0 | 4104MHz@1.23V Big Bang XPower 5850 | 880/1050 6GB Sector 7 | 1728MHz 
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cardboard (case/loop in prog) 
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At long last...
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CPUMotherboardGraphicsRAM
920 D0 | 4104MHz@1.23V Big Bang XPower 5850 | 880/1050 6GB Sector 7 | 1728MHz 
Hard DriveOSMonitorPower
F115 W7P64 245BW SPI Magna 1kW 
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cardboard (case/loop in prog) 
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post #4 of 10
Ah, a problem in the loop flow direction ...

You can not flow the coolant uphill. In other words, the pump can not draw fluid nor prime itself drawing against gravity.

If the RES is higher than the pump, great! But the IN location on your diagram being at the base is a no-no for flow.
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Athlon 64 x2 5000 Black 2.6Ghz OC 3.3Ghz GigaByte GA-MA78GM-S2H Full Radeon 780G HD 3200 4GB Corsair DDR2 6400C4 
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Athlon 64 x2 5000 Black 2.6Ghz OC 3.3Ghz GigaByte GA-MA78GM-S2H Full Radeon 780G HD 3200 4GB Corsair DDR2 6400C4 
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post #5 of 10
Thread Starter 
Quote:
Originally Posted by kevingreenbmx View Post
looks like a good plan, although what Graphics cards do you have? that will determine if you have enough rad space for CPU and two GPUs. I would recommend a 3x120mm rad in the top if you can make it fit.

1) it will help, I have a similar setup. (although I have a total of 4 rads)

2)you will have no issues with flowrate with that loop. however, I would reccomend buying all your parts seperate and getting one of the bay res's that uses an MCP355 pump instead.

3)just stick with a single pump, multiple pumps can cause issues...

GPUs are 470 GEs that's why I'm putting them into water. Great advice on the pump.
post #6 of 10
Thread Starter 
Quote:
Originally Posted by bmaverick View Post
Ah, a problem in the loop flow direction ...

You can not flow the coolant uphill. In other words, the pump can not draw fluid nor prime itself drawing against gravity.

If the RES is higher than the pump, great! But the IN location on your diagram being at the base is a no-no for flow.

What's your suggestion? Add another pump from GPU2 out going to RES/PUMP in?

OR move the RES/PUMP combo as low as I can? Would it be a problem pumping out water going the my 240 ceiling rad?
post #7 of 10
Quote:
Originally Posted by bmaverick View Post
Ah, a problem in the loop flow direction ...

You can not flow the coolant uphill. In other words, the pump can not draw fluid nor prime itself drawing against gravity.

If the RES is higher than the pump, great! But the IN location on your diagram being at the base is a no-no for flow.
it will not matter with a res/pump combo.
post #8 of 10
Thread Starter 
Quote:
Originally Posted by kevingreenbmx View Post
looks like a good plan, although what Graphics cards do you have? that will determine if you have enough rad space for CPU and two GPUs. I would recommend a 3x120mm rad in the top if you can make it fit.

1) it will help, I have a similar setup. (although I have a total of 4 rads)

2)you will have no issues with flowrate with that loop. however, I would reccomend buying all your parts seperate and getting one of the bay res's that uses an MCP355 pump instead.

3)just stick with a single pump, multiple pumps can cause issues...

I thought about the 3x120mm rads but the one included in this kit is 240. I checked the price comparison from the stickies between custom and this kit and the price difference doesn't look appealing to my eyes


Quote:
Originally Posted by MCBrown.CA View Post
Loop planning looks good.

1. It's not necessary to have the RX120 between the CPU and GPU but it will help to dissipate some of the heat dumped by the CPU before the coolant hits the GPUs. At most I would anticipate a few degrees difference with the RX120 installed.

2. Yes, adding a radiator to your loop will affect flow rate. Most current-gen rads aren't very restrictive though, so don't sweat it too much. I'm not too familiar with the Rasa kit pump but from what I've read, it's not the best. I would do some more research about it's capabilities before attempting to push dual rads, CPU and dual GPUs.

3. If you do run two pumps in a loop, they must be identical to avoid premature wear on either unit. If you are thinking of adding a second pump, I would seriously consider selling the Rasa pump and getting one single powerful unit (355, DCP 4.0 or D5/655) that would be sufficient for the whole loop.

Cool! I'll buy this kit and additional 120 rad now and will proceed with this setup. I'm also going to use compression fittings , angles, rotaries and Primochill tubings for cosmetic looks

Thanks for your time guys!! Much appreciated.

Wish me luck
post #9 of 10
You know you can get that kit with a 360mm rad right?
post #10 of 10
Thread Starter 
Quote:
Originally Posted by kevingreenbmx View Post
You know you can get that kit with a 360mm rad right?
Yeah but I'm not sure if I can mount it in my case (sig). What I'm concerned about is the water that will be coming out from the CPU block going to the GPUs. I know that it will be warm then will go straight to the GPU. That's why I thought about putting a 120 on the rear side.

I mean, even though I have a 480, still the water that will come out from the CPU will be warmer and the only way to re-fresh it is to get another rad - at least from my noob mind's perspective.
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