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

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  • Components
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July 29, 2014 6:23:36 AM

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

More about : cool 2nd gpu setup

July 29, 2014 6:33:52 AM

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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July 29, 2014 6:35:57 AM

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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July 29, 2014 6:54:39 AM

Konnefke said:
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


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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July 29, 2014 7:08:06 AM

270x's should not be getting that hot even in sli something is configured wrong or one has a faulty cooler. My 780ti classifieds which i do belive run hotter than a 270x dont even get above 80c in sli.
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July 29, 2014 7:37:23 AM

just add extra fans and ziptie them in there and point them at the cards if you worrie about heat so much, also try flipping the card make your fist card the second card and the other way around
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July 29, 2014 9:57:15 AM

azzazel_99 said:
270x's should not be getting that hot even in sli something is configured wrong or one has a faulty cooler. My 780ti classifieds which i do belive run hotter than a 270x dont even get above 80c in sli.


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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July 29, 2014 10:09:56 AM

are they overclocked? maybe you have accidentaly overvolted the card(s)

you can check these two with gpuZ
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July 29, 2014 10:11:59 AM

Konnefke said:
are they overclocked? maybe you have accidentaly overvolted the card(s)

you can check these two with gpuZ


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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July 29, 2014 10:30:23 AM

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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July 29, 2014 10:35:50 AM



Konnefke said:
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

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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July 29, 2014 10:49:35 AM

take out both cards and put the overheating one back in, only that one.
try running some benchmarks and look at the temps
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July 29, 2014 10:49:51 AM

try leaving the side of your case open and see if that helps with the temps
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July 29, 2014 10:51:26 AM



Konnefke said:
take out both cards and put the overheating one back in, only that one.
try running some benchmarks and look at the tems

Ok. I'll give it a try

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