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Alternative loop config

post #1 of 10
Thread Starter 
Hey guys, I'm planning on water cooling my pc this winter and I was wondering, wouldn't it make more sense to have a y splitter coming from you radiator and have one end go to the cpu and one to the gpu and then have the two outputs meet again with a y splitter and go back to the res or pump? Wouldn't this cool the gpu more effectively than having the warm water from the cpu go into the gpu block? Or would the difference in temperature be negligible?
post #2 of 10
No, it's better for flow to just do it CPU to GPU or GPU to CPU, plus you wouldn't notice any difference in temps really.

Good luck on the loop!
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post #3 of 10
Thread Starter 
Alright cool, that would be easier to setup/maintain anyways, Thanks for the quick response!
post #4 of 10
Quote:
Originally Posted by teamqball View Post
Alright cool, that would be easier to setup/maintain anyways, Thanks for the quick response!
No problem. The only thing that really matters in loop order is that the pump is sucking water from the reservoir, not pushing the water through. Hopefully you understood that. Hehe.
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post #5 of 10
Thread Starter 
Ya that's what I thought, one more question though, What is the standard tube diameter on a loop with 1 cpu block, 1 gpu block, 1 res, 1 pump and 1 radiator?
post #6 of 10
Quote:
Originally Posted by teamqball View Post
Ya that's what I thought, one more question though, What is the standard tube diameter on a loop with 1 cpu block, 1 gpu block, 1 res, 1 pump and 1 radiator?
It's up to you, either 3/8" or 1/2". You won't notice the difference in temps. 3/8" is better for mid-towers.
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post #7 of 10
Thread Starter 
Cool, alright well I think that covers all of my water cooling questions, thanks
post #8 of 10
Dont do Y's because they will reduce flow to each block. Also, loop order really doesnt matter b/c temps even out, the water does not warm up that much from block to block. I personally go for the least amount of tubing as possible because less tubing = better flow.
post #9 of 10
i can second loop order mad no difference for me my first was GPU>CPU and then i dd CPU>GPU zero temp difference
post #10 of 10
Another reason not to split the loop, aside from halving the flow rate to each component, is that the more restrictive component will get a lower flow rate than the less restrictive component. As the CPU blocks are generally higher restriction this is a bad thing.

Parallel works with multi GPU setups as the blocks are identical and therefore the restriction is identical too. This means that they get 1/2 (or 1/3, 1/4) of the flow rate each. GPUs are also not that sensitive to temperature and WCing them drops their temps a lot anyway, so they can cope with low flow rates. CPU blocks can't.

The reason for loop order not being an issue is that it takes ~260W to heat water at 1GPM by 1°C, so the temperature of the water does not vary much as it goes through your loop.
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CPUMotherboardGraphicsRAM
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Hard DriveHard DriveHard DriveCooling
Corsair Force 120 WD Blue 500GB WD Caviar Green 1TB XSPC RayStorm 
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RX240 MCR 220 EK 7950 Copper Acetal  DDC-1T 
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PowerCaseMouseAudio
Corsair TX 750W CoolerMaster CM690 II G500 Klipsch ProMedia 2.1 
Audio
Asus Xonar DX 
CPUMotherboardRAMHard Drive
A10-6800K Gigabyte GA-F2A85XN-WIFI G Skill 1600 CAS9 Kingston SSD Now 60GB 
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