How do I cool Down my 2nd GPU in my CF setup

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Chaingunchris

Chaingunchris

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Jul 29, 2014
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Hi. I've been having some problems lately with my crossfire setup when it comes to temperature. When I play performance hungry games like Skyrim (with mods), Wolfenstein or so,etching like that my 2nd GPU goes up to 91 degrees Celsius. I know that this is stressful on the GPU and that playing Skyrim or Wolfenstein. Might kill my machine. My tech specs are here..


Corsair carbide 400R with 6 fans installed
2X Asus direct CU 2 top 270x 2GB
Asus Z87 plus
Intel core i7 4770k at stock at the moment
16GB Of corsair vengeance Lp ddr3
EVGA 850 g2
1TB WD caviar black
1TB WD caviar blue
 
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Rammy

Rammy

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Sep 3, 2012
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There should be a slot gap between your two graphics cards which (unlike some motherboards) should help them cool themselves.

Assuming of your six fans at least one is on the side panel and targeted towards your graphics cards (I'd assume the lower of the two side panel mounts), and assuming it's a decent fan running at a reasonable speed, then there isn't a huge amount that you can do without spending a lot of money.

If there is a huge delta between one card and the other (the top one will usually be a little bit hotter) then it might indicate a specific fault with the cards cooler, or an issue with how the card responds to it's own increasing temperature (ie, the fan speed doesn't increase accordingly).
 
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Konnefke

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Jan 4, 2014
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that's probably your first card dumping heat on the second one.
nothing much to be done, try get the best airflow as possible otherwise liquid cooling is necessarily. you can try doing some under volting but i won't recommend it

try making a custom fan curve so your graphics card fans spin up as much as they can when reaching about 85°C

91 will result in faster degrade of your components and try to avoid these temperature's (AMD say's it should be able to handle up to 95 °c but i think that is way out of the comfort zone ;) -

94

 
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Chaingunchris

Chaingunchris

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Jul 29, 2014
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the thing is I cant add liquid cooling. I have a 3 year warranty on both of these cards and if anything goes wrong then I cant get it replaced. ive been considering it though but im saving 3rd party coolers as a last resort. I don't know if adding more fans will do anything tho
 
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Chaingunchris

Chaingunchris

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Jul 29, 2014
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I've check all of the fans on the GPU and all of them are turning what should i do. I also have both fans at 100 percent with GPU tweak that comes with the cards
 
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Chaingunchris

Chaingunchris

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Jul 29, 2014
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I have gpuz and it said they were fine. I'm actually trying to undervolt not and it seems to be doing nothing
 
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Konnefke

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what voltage and clocks (RAM and Core) does gpuZ read?
also look at gpuZ while running a benchmark like heaven or furmark and see if the voltage change's.

What software are you using to read the temperature's?

you case is really strange considering it's ASUS CU2 cooler is really good at dissepeating heat
 
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Chaingunchris

Chaingunchris

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Jul 29, 2014
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Well it comes overclocked already so the regular is 1120 MHz base. It didn't change from that. I set the voltage to 1100 I'm GPU tweak. When I ran fur mark it didn't change. The memory clock is normal. I don't know what could be causing this.
 
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