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Designing new loop for my new rig, advice and suggestions welcome :)

post #1 of 6
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So hey, i am upgrading my rig. Seem straight forward enough. At the moment i have a "scan bought" rig with a 120.2 and a 120.1 a small bp res and a mcp 355 pushing fluid round 3/8" hoses.

I am upgrading my mobo to a Asus rampage Ex 3 ( i just dont want to move on fro my i7980x) and have got danger den's chp 100 mobo cooler

i have just bought a gtx680, and that too will be water cooled along with the cpu. I am considering going sli on this in the very near future.

I am seriously considering buying an 800D, but am interested to see if I can get all my stuff in the tj09. (I have a dremel biggrin.gif )

My main questions are related to rads; I have read that one fan per item is a good idea, so should i get another 120.2 or 120.3, push and pull on the rads or only push?

Dual loop or no ? one for the sli GFX and one for cpu and mobo?

How to design the loops?

res - pump -rad 120.1-gpu-gpu-rad120.2-mobo-cpu-rad120.2-res for single loop? dual loop?

Ideas and suggestions are welcome, i would like some input before buying the rest of the stuff, and have a crack at putting it together.
post #2 of 6
Quote:
Originally Posted by TomoTRON View Post

Dual loop or no ? one for the sli GFX and one for cpu and mobo?

Ive got a similar situation as you.
I have 2 separate loops.
One loop goes: res>pump>240mm rad>GTX680 waterblocks>res
The other loop goes: res>pump>360mm rad>CPU block>res
I like having two separate loops so the temps for GPU and CPU are independent of each other

Hope this helps you some thumb.gif
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post #3 of 6
Quote:
Originally Posted by michaelrw View Post

Ive got a similar situation as you.
I have 2 separate loops.
One loop goes: res>pump>240mm rad>GTX680 waterblocks>res
The other loop goes: res>pump>360mm rad>CPU block>res
I like having two separate loops so the temps for GPU and CPU are independent of each other
Hope this helps you some thumb.gif

There is no performance benefit to having 2 separate loops at all. A single loop is cheaper and easier to set up. The only reason to ever go with 2 loops is for aesthetics.

Also loop order does not matter. Do whatever is easiest/looks best.
post #4 of 6
Quote:
Originally Posted by Kinru View Post

There is no performance benefit to having 2 separate loops at all. A single loop is cheaper and easier to set up. The only reason to ever go with 2 loops is for aesthetics.
Also loop order does not matter. Do whatever is easiest/looks best.

Not entirely true about the dual loops. 2 loops can be used to weigh your cooling in favor of one component, while a single loop splits everything essentially equally. It's not something most people ever care about, but the option is there. For example, if your single loop has the CPU running hotter than you want, and the GPUs nice and cool, you can split it to 2 loops, putting more radiator per watt on the CPU loop. The CPU loop will have a lower delta, while the GPU temp will go up.

Still, I agree, in this situation there's zero reason to do 2 loops, and plenty of reasons not to. A dual loop can't take advantage of unused cooling at partial loads - if the CPU is low usage and the GPUs heavily loaded (like gaming in general) the CPUs extra cooling is wasted, instead of reducing the GPU temp even further.
Primary System
(18 items)
 
  
CPUMotherboardGraphicsRAM
i7 860 Gigabyte P55A-UD4P 2x EVGA GTX460 2x 4gb Corsair Vengeance 
Hard DriveCoolingCoolingCooling
Samsung F4 XSPC Rasa cpu block 2x XSPC Razor 460 Black Ice GTX 360 
CoolingOSMonitorKeyboard
MCP-350 Windows 7 64bit Samsung SyncMaster SA300 23" Filco Majestouch "Otaku" Tenkeyless 
PowerCaseMouseAudio
Corsair TX850W v1 NZXT Whisper Logitech Performance MX Altec Lansing ATP3 
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Primary System
(18 items)
 
  
CPUMotherboardGraphicsRAM
i7 860 Gigabyte P55A-UD4P 2x EVGA GTX460 2x 4gb Corsair Vengeance 
Hard DriveCoolingCoolingCooling
Samsung F4 XSPC Rasa cpu block 2x XSPC Razor 460 Black Ice GTX 360 
CoolingOSMonitorKeyboard
MCP-350 Windows 7 64bit Samsung SyncMaster SA300 23" Filco Majestouch "Otaku" Tenkeyless 
PowerCaseMouseAudio
Corsair TX850W v1 NZXT Whisper Logitech Performance MX Altec Lansing ATP3 
  hide details  
Reply
post #5 of 6
Quote:
Originally Posted by bakageta View Post

Not entirely true about the dual loops. 2 loops can be used to weigh your cooling in favor of one component, while a single loop splits everything essentially equally. It's not something most people ever care about, but the option is there. For example, if your single loop has the CPU running hotter than you want, and the GPUs nice and cool, you can split it to 2 loops, putting more radiator per watt on the CPU loop. The CPU loop will have a lower delta, while the GPU temp will go up.
Still, I agree, in this situation there's zero reason to do 2 loops, and plenty of reasons not to. A dual loop can't take advantage of unused cooling at partial loads - if the CPU is low usage and the GPUs heavily loaded (like gaming in general) the CPUs extra cooling is wasted, instead of reducing the GPU temp even further.

Well, obviously that is true, but I have never once seen someone actually do it. If your CPU temps are too high, you most likely don't have enough rad to begin with.
post #6 of 6
Quote:
Originally Posted by Kinru View Post

Well, obviously that is true, but I have never once seen someone actually do it. If your CPU temps are too high, you most likely don't have enough rad to begin with.

so then, by default, what you're saying is that running one large loop will give performance gains over two independent loops... is that correct?
unless of course theyre both equal in performance..
Edited by michaelrw - 5/7/12 at 11:09pm
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