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Radiator size question

post #1 of 5
Thread Starter 
Over the course of the next few months I'm going to be changing my GPUs to two GTX 560 Ti's and I would like to put them under water. The case I'm looking at getting can house either 240mm rad x 2 or one 240mm + one 280mm rad. Question being, could a 280mm rad cool two GTX 560 Ti's sufficiently or would air cooling be a better option?
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Firefly
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post #2 of 5
280mm would come close to matching the surface area of a 360mm rad if I recall correctly. (just home from a three hour FPGA lab, not working it out. tongue.gif)

My 360mm rad keeps my 470s under 53 degrees C even when they're massively overclocked so I'd imagine your 280mm will be fine. smile.gif

Edit: Massively=1.15V each, one at 825MHz and the other at 900. Folding overnight.
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Ex-Kentsfield rig
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post #3 of 5
Thread Starter 
Dang 53C My 470 at load is almost double that with the stock cooler biggrin.gif
Firefly
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Firefly
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post #4 of 5
Quote:
Originally Posted by Aqualoon View Post

Dang 53C My 470 at load is almost double that with the stock cooler biggrin.gif

That's the hotter one too. biggrin.gif
The reference cooler is the reason the 470 has a bad reputation, my twin frozr card never went over 60C while folding at 800 core.
My reference cooled card was hitting 85C on 100% fan at 750MHz core.

But if a 360mm rad is enough for my cards the 560tis should be just fine on a 280mm.
The surface area of a 280mm rad is 140*280=39200mm^2
The surface area of a 360mm rad is 120*360=43200mm^2
It should be fine as your cards will use a good bit less power than mine even if you OC them and you've got about the same surface area in your rad if it's as thick as mine.
The MCR320 is a fairly slim rad as well so I'd imagine you'd be fine with any decent 280mm rad. smile.gif

Edit: Well, that's the area of the side of the rad, surface area is actually the area of the fins but that would still give you a rough estimate of how it would compare to my setup.
Ex-Kentsfield rig
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Q6600 RIG :D
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CPUMotherboardGraphicsRAM
4790k MSI Z97M Gaming 780 Ti SLi Corsair Vengeance pro 2x8GB 
Hard DriveHard DriveCoolingOS
Seagate NAS 240GB m500s RAID 0 MCP 350 w/ res top >> MCP655 >> Heatkiller full... Windows 8.1 
MonitorKeyboardPowerCase
3X QNIX 2560x1440 @ 110Hz G910 EVGA Supernova 1000 G2 Stacker 830 
MouseMouse PadAudioAudio
G402 / Deathadder 2K13 League of legends one, cloth ODAC >> O2 >> HD800 / K702s Samson mediaone 5as 
AudioOtherOtherOther
Samson GoMic Asus wireless AC Logitech G27 Logitech C920 Webcam 
CPUMotherboardGraphicsRAM
Q6600 Asus P5Q-E 8800GTX Crucial Ballistix Tracers 
Hard DriveCoolingOSPower
320GB Samsung spintpoint T166 Xigmatek Dark Knight 7 Chieftec 390W :p 
Case
Some generic chieftec one for now 
  hide details  
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Ex-Kentsfield rig
(20 items)
 
Q6600 RIG :D
(9 items)
 
 
CPUMotherboardGraphicsRAM
4790k MSI Z97M Gaming 780 Ti SLi Corsair Vengeance pro 2x8GB 
Hard DriveHard DriveCoolingOS
Seagate NAS 240GB m500s RAID 0 MCP 350 w/ res top >> MCP655 >> Heatkiller full... Windows 8.1 
MonitorKeyboardPowerCase
3X QNIX 2560x1440 @ 110Hz G910 EVGA Supernova 1000 G2 Stacker 830 
MouseMouse PadAudioAudio
G402 / Deathadder 2K13 League of legends one, cloth ODAC >> O2 >> HD800 / K702s Samson mediaone 5as 
AudioOtherOtherOther
Samson GoMic Asus wireless AC Logitech G27 Logitech C920 Webcam 
CPUMotherboardGraphicsRAM
Q6600 Asus P5Q-E 8800GTX Crucial Ballistix Tracers 
Hard DriveCoolingOSPower
320GB Samsung spintpoint T166 Xigmatek Dark Knight 7 Chieftec 390W :p 
Case
Some generic chieftec one for now 
  hide details  
Reply
post #5 of 5
Quote:
Originally Posted by Aqualoon View Post

Dang 53C My 470 at load is almost double that with the stock cooler biggrin.gif

Wow!

560s aren't dual gpu or anything. I think the 280 will cool them both fine (especially compared to "almost double 53C" ). smile.gif
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