Overclock.net › Forums › Cooling › Water Cooling › Estimated radiator size / can these rads handle 7970 Crossfire?
New Posts  All Forums:Forum Nav:

Estimated radiator size / can these rads handle 7970 Crossfire?

post #1 of 15
Thread Starter 
Hi, currently I have two radiators in my system.

- XSPC EX120 slim 1x120mm radiator (35.5mm thickness, medium-low FPI: 15-20 range) in push configuration.
- Magicool MC-RADI280 slim 2x140mm radiator (29mm thickness, medium-low FPI: 15-20 range) in pull configuration.

Currently I am running an i5-3570k @ 4.8GHz. Hits max ~70-80C under stress.I can't remember the exact number, I'll have to have a look again when I go on my lunch break
My GPU (GTX 670) hits max ~54C under fur stress. I think this is partially because my block isn't all that great. It was getting horrid temperatures before I made some tweaks.

Anyway, I have a 7970 on the way (to replace the 670) with an EK copper block. That should be fine on its own.
But I just saw a great deal for another 7970 with an EK block and backplate, and I'm considering getting a second one if my rads can handle it.

Do you think I can get by with my current radiator setup and Crossfire?

I can probably barely fit another 120mm-140mm radiator in there (any thickness), but it would cost a pretty penny more and I would need to completely remove my HDD cage and mount them all in 5.25" bays, which I'm a little hesitant to do because of the extra cost.

Thanks! thumb.gif
Edited by Powermonkey500 - 11/9/12 at 6:43am
post #2 of 15
I would think so. A dual 180 is quite a bit of surface area. It might not be a bad idea to pick up a fan controller so that you can crank up the fans a bit if need be without having to run at full bore.
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k Gigabyte Z77X-UD5H MSI TF3 7950 Tri-fire Samsung 30nm 4x4GB 
Hard DriveOSMonitorKeyboard
Intel 320 160GB and a few samsung platters Windows7 x64 Catleap Q270 Rosewill mechanical 
PowerCaseMouseMouse Pad
Corsair AX850 Xigmatek Elysium Razer Deathadder Puretrak talent 
Audio
Xonar Essence STX 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k Gigabyte Z77X-UD5H MSI TF3 7950 Tri-fire Samsung 30nm 4x4GB 
Hard DriveOSMonitorKeyboard
Intel 320 160GB and a few samsung platters Windows7 x64 Catleap Q270 Rosewill mechanical 
PowerCaseMouseMouse Pad
Corsair AX850 Xigmatek Elysium Razer Deathadder Puretrak talent 
Audio
Xonar Essence STX 
  hide details  
Reply
post #3 of 15
Thread Starter 
Thanks for the input smile.gif
I'd like more opinions!
post #4 of 15
I'd say the processor is getting decently hot. With some higher-rpm fans on the radiators, you might be able to make it, but my suggestion would be either add a radiator, or replace the 120 radiator with a 240.
Up & Running
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i3-4330 ASRock Fatal1ty Killer Z97 XFX RX 480 16gb G.Skill Ripjaws 1866 
Hard DriveCoolingOSMonitor
1TB Western Digital + WD 400gb + 120gb Intel SSD MCP-655 Vario + XSPC Raystorm + ThermoChill PA1... Windows 10 x64 28" Hanns-G 
KeyboardPowerCaseMouse
Worwolf Mechanical 1000HX Corsair Cooler Master Cosmos S Logitech Optical G400 
Audio
Novation Ultranova 
  hide details  
Reply
Up & Running
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i3-4330 ASRock Fatal1ty Killer Z97 XFX RX 480 16gb G.Skill Ripjaws 1866 
Hard DriveCoolingOSMonitor
1TB Western Digital + WD 400gb + 120gb Intel SSD MCP-655 Vario + XSPC Raystorm + ThermoChill PA1... Windows 10 x64 28" Hanns-G 
KeyboardPowerCaseMouse
Worwolf Mechanical 1000HX Corsair Cooler Master Cosmos S Logitech Optical G400 
Audio
Novation Ultranova 
  hide details  
Reply
post #5 of 15
Thread Starter 
Quote:
Originally Posted by Sm0keydaBear View Post

I'd say the processor is getting decently hot. With some higher-rpm fans on the radiators, you might be able to make it, but my suggestion would be either add a radiator, or replace the 120 radiator with a 240.

70C max under Prime95. That's the absolute hottest it would get in real-world situations. I see 80C in IBT but that's very unlikely to happen in real world.
post #6 of 15
Quote:
Originally Posted by Powermonkey500 View Post

70C max under Prime95. That's the absolute hottest it would get in real-world situations. I see 80C in IBT but that's very unlikely to happen in real world.

I have one 7970 and it ran at 80C on stock air. They are hot cards. I'd recommend you run the numbers.

http://martinsliquidlab.org/pump-and-radiator-optimizer-spreadsheet/

This is not an exact science, but in both the rigs I have built the results have been pretty darn close.
post #7 of 15
That 360 (180x2) has more surface area than a 480mm rad. Plus you also have an extra 120. Thats a lot of surface area. I doubt that most people running a crossfire system really have all that much surface area. While the cpu may get hot its not really dumping all that much heat into the loop. With that small die size Ivys just run hot.
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k Gigabyte Z77X-UD5H MSI TF3 7950 Tri-fire Samsung 30nm 4x4GB 
Hard DriveOSMonitorKeyboard
Intel 320 160GB and a few samsung platters Windows7 x64 Catleap Q270 Rosewill mechanical 
PowerCaseMouseMouse Pad
Corsair AX850 Xigmatek Elysium Razer Deathadder Puretrak talent 
Audio
Xonar Essence STX 
  hide details  
Reply
My System
(14 items)
 
  
CPUMotherboardGraphicsRAM
i5 3570k Gigabyte Z77X-UD5H MSI TF3 7950 Tri-fire Samsung 30nm 4x4GB 
Hard DriveOSMonitorKeyboard
Intel 320 160GB and a few samsung platters Windows7 x64 Catleap Q270 Rosewill mechanical 
PowerCaseMouseMouse Pad
Corsair AX850 Xigmatek Elysium Razer Deathadder Puretrak talent 
Audio
Xonar Essence STX 
  hide details  
Reply
post #8 of 15
Thread Starter 
Quote:
Originally Posted by BababooeyHTJ View Post

That 360 (180x2) has more surface area than a 480mm rad. Plus you also have an extra 120. Thats a lot of surface area. I doubt that most people running a crossfire system really have all that much surface area. While the cpu may get hot its not really dumping all that much heat into the loop. With that small die size Ivys just run hot.

It's actually 280 (2x120mm) not 360
And keep in mind that they are slim and low FPI
Edited by Powermonkey500 - 11/9/12 at 1:53pm
post #9 of 15
Also, check this out, something I've found about removing the IHS from the processor and cooling directly to the die

IHS Removed
Up & Running
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i3-4330 ASRock Fatal1ty Killer Z97 XFX RX 480 16gb G.Skill Ripjaws 1866 
Hard DriveCoolingOSMonitor
1TB Western Digital + WD 400gb + 120gb Intel SSD MCP-655 Vario + XSPC Raystorm + ThermoChill PA1... Windows 10 x64 28" Hanns-G 
KeyboardPowerCaseMouse
Worwolf Mechanical 1000HX Corsair Cooler Master Cosmos S Logitech Optical G400 
Audio
Novation Ultranova 
  hide details  
Reply
Up & Running
(15 items)
 
  
CPUMotherboardGraphicsRAM
Intel i3-4330 ASRock Fatal1ty Killer Z97 XFX RX 480 16gb G.Skill Ripjaws 1866 
Hard DriveCoolingOSMonitor
1TB Western Digital + WD 400gb + 120gb Intel SSD MCP-655 Vario + XSPC Raystorm + ThermoChill PA1... Windows 10 x64 28" Hanns-G 
KeyboardPowerCaseMouse
Worwolf Mechanical 1000HX Corsair Cooler Master Cosmos S Logitech Optical G400 
Audio
Novation Ultranova 
  hide details  
Reply
post #10 of 15
Thread Starter 
Quote:
Originally Posted by Sm0keydaBear View Post

Also, check this out, something I've found about removing the IHS from the processor and cooling directly to the die
IHS Removed

Already done that. Not directly to die, but replaced TIM and reduced the IHS gap. All in all reduced CPU temps by ~26C
New Posts  All Forums:Forum Nav:
  Return Home
  Back to Forum: Water Cooling
Overclock.net › Forums › Cooling › Water Cooling › Estimated radiator size / can these rads handle 7970 Crossfire?