Sapphire HD7970 Dual-X crossfire temperatures

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wiiguy22

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Oct 1, 2013
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Hi,

I recently got a new case (Fractal Design XL R2)
Before I was using a Lanboy but the dust and noise just bugged me too much I had to move to a silent case. I knew this going in the temps on these OCed HD7970s will be worse in a case like this. Now I have it here are the temps:
Top card idles at 50 degrees, under load it hits 85 degrees (Heaven for 30 mins).
Bottom card idles at 35 and load at 60, it just laughs at the top card.

Is there anyway to improve my current setup without adding more fans? I know I can go water but the cost and the non-reference PCB gets in the way. Is there a way to use the bottom card as the primary card so the idle temps on the top can drop a bit?

FYI I'm running eyefinity so the top card is powering the monitors.
 
Solution
Jake Wenta
Heat rises, so the higher component will be hotter. And the new R9 290x runs at 95*C on single card xD. But 80*C sounds about right for crossfire 7970's, but to improve temperatures, you can do a few things. Custom loop, PCie Fans, more fans blowing at them, customizing fan speeds, custom cooling. Possibilities are endless when customizing.
As for dust, keep it off the floor to lower dust build up, keep positive air pressure to lower it. AND BLOW OUT YOUR PC EVERY 3-6 MONTHS :p

But without adding fans, you'd probably need something like MSi Afterburner and use the fan setup to create your custom Heat to Fan Speed curve for more cooling. But the noise will increase of course. More fans usually means quieter and cooler as more heat is...
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Jake Wenta

Jake Wenta

Honorable
Mar 13, 2013
696
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11,160
Heat rises, so the higher component will be hotter. And the new R9 290x runs at 95*C on single card xD. But 80*C sounds about right for crossfire 7970's, but to improve temperatures, you can do a few things. Custom loop, PCie Fans, more fans blowing at them, customizing fan speeds, custom cooling. Possibilities are endless when customizing.
As for dust, keep it off the floor to lower dust build up, keep positive air pressure to lower it. AND BLOW OUT YOUR PC EVERY 3-6 MONTHS :p

But without adding fans, you'd probably need something like MSi Afterburner and use the fan setup to create your custom Heat to Fan Speed curve for more cooling. But the noise will increase of course. More fans usually means quieter and cooler as more heat is being blown out, so the fans can run at a lower RPM lowering DBa and if that is more important to you, then this is what you'll probably have to do. (And side fans help too)
 
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Solution
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wiiguy22

Honorable
Oct 1, 2013
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10,530


Yeah the side fan will help, however since I'm sitting to the left of the case it will be loud as well. Noise wise this case is such an improvement over the last one
 
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Jake Wenta

Jake Wenta

Honorable
Mar 13, 2013
696
1
11,160
Well you can always get a noctua or other PWM and control its RPM. Or get a cougar fan, at max (1000RPM) It pushes about 65CFM for a 120mm and less than 20DBa, so you can't hear it unless your ear it pretty much right next to it.
 
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