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Crossfire 6950 Cooling

post #1 of 6
Thread Starter 
I've installed heatsinks for CPUs but never GPUs, so I'll, most likely, either be buying the 6950s with after market coolers already installed or just the reference cards.

Each 6950 @ 2gb; 256-bit.

I'll be running the two with:

Mobo: ASRock P67 EXTREME4 (B3)
Case: HAF X 942

The reason I listed the motherboard is because it has 3x pci slots, of which, I assume I can choose any two for my Crossfired cards (the ones with the most distance, presumably)

The case is listed to have high air flow but I added two extra fans:
+1 200MM Top Fan
+1 VGA Fan Duct 120mm

Right now I've had different opinions on the cards:
A few people say that : Twin Frozr II MSI Heatsink will not exhaust hot air and instead blow hot air up into the case and thus the upper card and make both cards hot.
Others say that the reference cards MSI R6950-2PM2D2GD5 Radeon HD 6950 2GB 256-bit are already hot and thus two would make it very hot.

Should I look at the Frozr III model? A different manufacturer?

I'd like to do the 6950s as they seem very future proof. Can someone give me some suggestions with support, thanks.


The full build here and here.
post #2 of 6
Quote:
Originally Posted by janitor;13790161 
Right now I've had different opinions on the cards:
A few people say that : Twin Frozr II MSI Heatsink will not exhaust hot air and instead blow hot air up into the case and thus the upper card and make both cards hot.
Others say that the reference cards MSI R6950-2PM2D2GD5 Radeon HD 6950 2GB 256-bit are already hot and thus two would make it very hot.

Both parties are correct.

The HAF X has excellent air cooling features and can maintain very good overall case temps. So you should have no worries with the Twin Frozr cards blowing air in the case as the HAF is more than capable of keeping temps low (if you've setup the intake/exhaust correctly). Considering the above and the fact that the TF heatsink will keep your GPU cooler and produce less noise than the reference cooler, you should go with that setup.

The reference design coolers are loud, and still exhaust some of the hot air in the case, on top of that the cards themselves get REALLY hot (thus increasing the temps in the case anyway) so doesn't really matter where the majority of the hot air is being exhausted if you've got 2x ovens running @ 75C in the case (effectively increasing your case temps).
post #3 of 6
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Edited by Blech - 6/7/11 at 7:08pm
    
CPUMotherboardGraphicsRAM
i5 2500k ASUS P8P67 DELUXE XFX Black Edition 7970 G.Skill 
Hard DriveOptical DriveCoolingOS
Samsung 830 Series SSD  Samsung BluRay SH-B123L Corsair H-100  Windows 7 
MonitorKeyboardPowerCase
Toshiba 46" LED 1080p x3 in gaming mode HP KU0841 Thin KINGWIN LAZER LZ1000 HAF 932 
MouseMouse Pad
Logitech MX-518 Alien 
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CPUMotherboardGraphicsRAM
i5 2500k ASUS P8P67 DELUXE XFX Black Edition 7970 G.Skill 
Hard DriveOptical DriveCoolingOS
Samsung 830 Series SSD  Samsung BluRay SH-B123L Corsair H-100  Windows 7 
MonitorKeyboardPowerCase
Toshiba 46" LED 1080p x3 in gaming mode HP KU0841 Thin KINGWIN LAZER LZ1000 HAF 932 
MouseMouse Pad
Logitech MX-518 Alien 
  hide details  
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post #4 of 6
More support of what Hirolla stated.

Here is the inside of my HAF with the MSI TwinFrozr 6950 2gb cards. I raid at 5960x1080 hours at a time and I have never seen temps (on any of the components) to be worried about. Even if you decide to keep the stock cooling solution on the side panel you will not run into issues with the Twins blowing their hot air within the case.

at room temp:
CPU 37c / 53c max
GPU 1 41 / 56 avg gaming
GPU 2 38 / 51 avg gaming

If you went to the side panel with just the window with no fan(s) there could be an issue.

[URL="[URL=http://imageshack.us/photo/my-images/718/img2483bpr.jpg/][IMG]http://img718.imageshack.us/img718/7395/img2483bpr.jpg[/IMG][/URL]"]img2483bpr.jpg
Edited by Blech - 6/7/11 at 7:11pm
    
CPUMotherboardGraphicsRAM
i5 2500k ASUS P8P67 DELUXE XFX Black Edition 7970 G.Skill 
Hard DriveOptical DriveCoolingOS
Samsung 830 Series SSD  Samsung BluRay SH-B123L Corsair H-100  Windows 7 
MonitorKeyboardPowerCase
Toshiba 46" LED 1080p x3 in gaming mode HP KU0841 Thin KINGWIN LAZER LZ1000 HAF 932 
MouseMouse Pad
Logitech MX-518 Alien 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5 2500k ASUS P8P67 DELUXE XFX Black Edition 7970 G.Skill 
Hard DriveOptical DriveCoolingOS
Samsung 830 Series SSD  Samsung BluRay SH-B123L Corsair H-100  Windows 7 
MonitorKeyboardPowerCase
Toshiba 46" LED 1080p x3 in gaming mode HP KU0841 Thin KINGWIN LAZER LZ1000 HAF 932 
MouseMouse Pad
Logitech MX-518 Alien 
  hide details  
Reply
post #5 of 6
Thread Starter 
Quote:
Originally Posted by Blech;13791831 
More support of what Hirolla stated.

Here is the inside of my HAF with the MSI TwinFrozr 6950 2gb cards. I raid at 5960x1080 hours at a time and I have never seen temps (on any of the components) to be worried about. Even if you decide to keep the stock cooling solution on the side panel you will not run into issues with the Twins blowing their hot air within the case.

at room temp:
CPU 37c / 53c max
GPU 1 41 / 56 avg gaming
GPU 2 38 / 51 avg gaming

If you went to the side panel with just the window with no fan(s) there could be an issue.

IMAGE

That's great news. I actually have the Side-fan and a VGA Duct Fan as well as an extra top 200MM exhaust.

My build is actually similar to yours, would you mind telling me how many pin connectors I need for the 2 cards? :x And do you think that
This PSU will have enough power/connectors to run the cards/cpu?
post #6 of 6
~That PSU will be more than enough.
~Each Card has twin 6pin connectors (these are with your PSU)
~The 942 will do you well. Takes awhile for most to understand the benefits to the perferation mesh on this series of cases and how well they relieve the general heat inside once pushed.

Here is a pic of the stock 6pin (x4) connectors before they were sleeved:
img1928o.jpg

After Sleeving:
img2289j.jpg

Build Clean!!
    
CPUMotherboardGraphicsRAM
i5 2500k ASUS P8P67 DELUXE XFX Black Edition 7970 G.Skill 
Hard DriveOptical DriveCoolingOS
Samsung 830 Series SSD  Samsung BluRay SH-B123L Corsair H-100  Windows 7 
MonitorKeyboardPowerCase
Toshiba 46" LED 1080p x3 in gaming mode HP KU0841 Thin KINGWIN LAZER LZ1000 HAF 932 
MouseMouse Pad
Logitech MX-518 Alien 
  hide details  
Reply
    
CPUMotherboardGraphicsRAM
i5 2500k ASUS P8P67 DELUXE XFX Black Edition 7970 G.Skill 
Hard DriveOptical DriveCoolingOS
Samsung 830 Series SSD  Samsung BluRay SH-B123L Corsair H-100  Windows 7 
MonitorKeyboardPowerCase
Toshiba 46" LED 1080p x3 in gaming mode HP KU0841 Thin KINGWIN LAZER LZ1000 HAF 932 
MouseMouse Pad
Logitech MX-518 Alien 
  hide details  
Reply
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