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Dual Loop setup advice?

post #1 of 7
Thread Starter 
Hi guys,

I'm planning my next PC upgrade which will include the following:

  • ASUS Rampage IV Extreme with Koolance water block
  • i7 3930K with Koolance 370 waterblock
  • Dual EVGA GTX 580 HC
  • Koolance RP-402X2 res with dual Laing DDC pumps
  • 480 Rad
  • 360 Rad
  • 120 Rad

I'm thinking on doing the following:

Res/Pump 1 ->480 Rad -> CPU -> 120 Rad -> North Bridge -> VRM -> Res/Pump 2 -> 360 Rad -> VGA -> VGA -> Res/Pump 1

I guess my question is if the 120 Radiator will be enough to lower the water temperature enough to cool the motherboard components after the water temperature has been raised quite a lot by the overclocked CPU. Maybe it would be better to put the motherboard after the two not-so-overclocked VGAs? What do you think would be better for overall temperature?
    
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i7 920 @ 3.8GHz ASUS P6X58D-E XFX Radeon 5870HD OCZ3G1600LV2G 
Hard DriveOptical DriveCoolingCooling
OCZ Vertex V3 Sony DVD writer Koolance CPU-370 (CPU) 1.5mm Midplate ATI 5870 Block XSPC Razor 5870 
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Laing DDC-1RT/Plus with Cover Acrilic WATERCOOL... PHOBYA Balancer 250mm COOLGATE Triple 120 mm Apollish Twister UCAP12-S 
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post #2 of 7
Run the Koolance bay res in serial and you shouldn't have a problem. All those rads would cool everything.
post #3 of 7
I'd put the 120 rad in your second loop for the gpus instead, a 480rad is plenty for sb-e and mb blocks, besides the cpu would only heat up the water by 1C at full load overclocked. The gpus would dump more heat in the loop than your cpu + mb loop so it'd be better to put the 480 rad in your gpu loop but that wouldn't matter if you put your 120mm rad for the gpu loop (both loops would have 480 worth of rad). Even if your gpus aren't heavily overclocked they'll still put out a larger heat dump than your cpu + mb.
post #4 of 7
Thread Starter 
Thanks guys.
Quote:
Originally Posted by kazenagi View Post

I'd put the 120 rad in your second loop for the gpus instead, a 480rad is plenty for sb-e and mb blocks, besides the cpu would only heat up the water by 1C at full load overclocked. The gpus would dump more heat in the loop than your cpu + mb loop so it'd be better to put the 480 rad in your gpu loop but that wouldn't matter if you put your 120mm rad for the gpu loop (both loops would have 480 worth of rad). Even if your gpus aren't heavily overclocked they'll still put out a larger heat dump than your cpu + mb.

So, what you're saying is to take the 120 out from the 1st loop and add it to the 2nd loop so the GPUs are cooled by "one" 480 rad? or in between the two GPU cards?
    
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i7 920 @ 3.8GHz ASUS P6X58D-E XFX Radeon 5870HD OCZ3G1600LV2G 
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Laing DDC-1RT/Plus with Cover Acrilic WATERCOOL... PHOBYA Balancer 250mm COOLGATE Triple 120 mm Apollish Twister UCAP12-S 
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OCZ Vertex V3 Sony DVD writer Koolance CPU-370 (CPU) 1.5mm Midplate ATI 5870 Block XSPC Razor 5870 
CoolingCoolingCoolingCooling
Laing DDC-1RT/Plus with Cover Acrilic WATERCOOL... PHOBYA Balancer 250mm COOLGATE Triple 120 mm Apollish Twister UCAP12-S 
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TYGON R3603 Transparent 16/13mm ALPHACOOL Heatmaster Windows 7 x64 ViewSonic VA2216w 
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post #5 of 7
Quote:
Originally Posted by Eviang View Post

Hi guys,
I'm thinking on doing the following:
Res/Pump 1 ->480 Rad -> CPU -> 120 Rad -> North Bridge -> VRM -> Res/Pump 2 -> 360 Rad -> VGA -> VGA -> Res/Pump 1
I guess my question is if the 120 Radiator will be enough to lower the water temperature enough to cool the motherboard components after the water temperature has been raised quite a lot by the overclocked CPU. Maybe it would be better to put the motherboard after the two not-so-overclocked VGAs? What do you think would be better for overall temperature?

What you're describing is still just a single loop, it just has two pumps in it. You've got some SERIOUS overkill listed here, a single 480 would cool everything better than air, and 2x360 would be the point where I'd expect to see diminishing returns after that. Loop order isn't incredibly important, even in the worst possible case you'd be looking at ~4C difference in water temperature from the coldest point in the loop to the hottest. If I were cooling your setup, I'd probably go with a single powerful pump, and something like this:

res/pump > cpu > northbridge > vrm > top-mounted 360 > gpu > gpu > rear-mounted 360 >

Even if you had both radiators as the last two things before the reservoir, the water would only be ~1-2C hotter going into the GPU's (and another ~2C hotter coming out of them), which isn't a deal breaker by any stretch. In short, plan your tubing in whatever results in the cleanest run, or the easiest run to work on.
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post #6 of 7
I thought he'd be splitting it and having res/pump1 > rad > cpu > mb >res pump 1 then a separate loop res/pump2 > rad > gpu >res pump 2 guess i didn't read it right. If you have it all on one loop you can plop your rads anywhere you want just have the cpu getting water first so the water doesn't get heated by the gpus a 1/2C before it enters the cpu block.
post #7 of 7
Thread Starter 
Alright thanks! Actually I was thinking of two separate loops but changed my mind when I was writing this question because of redundancy in case one of the pumps dies.

I have more than enough information from you to make everything right. Thanks a bunch. tongue.gif

Sent from my Samsung Galaxy 2 using Tapatalk
    
CPUMotherboardGraphicsRAM
i7 920 @ 3.8GHz ASUS P6X58D-E XFX Radeon 5870HD OCZ3G1600LV2G 
Hard DriveOptical DriveCoolingCooling
OCZ Vertex V3 Sony DVD writer Koolance CPU-370 (CPU) 1.5mm Midplate ATI 5870 Block XSPC Razor 5870 
CoolingCoolingCoolingCooling
Laing DDC-1RT/Plus with Cover Acrilic WATERCOOL... PHOBYA Balancer 250mm COOLGATE Triple 120 mm Apollish Twister UCAP12-S 
CoolingCoolingOSMonitor
TYGON R3603 Transparent 16/13mm ALPHACOOL Heatmaster Windows 7 x64 ViewSonic VA2216w 
KeyboardPowerCaseMouse
Logitech G15 Thermaltake TR2 1000W CORSAIR OBSIDIAN 800D Logitech G5 
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CPUMotherboardGraphicsRAM
i7 920 @ 3.8GHz ASUS P6X58D-E XFX Radeon 5870HD OCZ3G1600LV2G 
Hard DriveOptical DriveCoolingCooling
OCZ Vertex V3 Sony DVD writer Koolance CPU-370 (CPU) 1.5mm Midplate ATI 5870 Block XSPC Razor 5870 
CoolingCoolingCoolingCooling
Laing DDC-1RT/Plus with Cover Acrilic WATERCOOL... PHOBYA Balancer 250mm COOLGATE Triple 120 mm Apollish Twister UCAP12-S 
CoolingCoolingOSMonitor
TYGON R3603 Transparent 16/13mm ALPHACOOL Heatmaster Windows 7 x64 ViewSonic VA2216w 
KeyboardPowerCaseMouse
Logitech G15 Thermaltake TR2 1000W CORSAIR OBSIDIAN 800D Logitech G5 
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Razer Goliathus Control 
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