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i have x2 gtx 780's in sli when running benchmarks my top card runs 17c hotter then mty bottom card is this normal ?

Tags:
  • Gtx
  • Graphics Cards
  • SLI
  • Graphics
Last response: in Graphics & Displays
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August 10, 2014 5:58:24 PM

I have x2 evga gtx 780 sc acx's in sli . when gaming and running benchmarks my top graphic card is running 17c hotter then my bottom card . I know it is normal for the top graphic card to run 10c hotter . but is the top card running 17c hotter to much ? I called evga tech support and they told me to put the graphic card that draws less power under full load on top and that's what I did . my benchmark scores are normal but I am a little worried about the big difference in temperatures . would it be worth it to reapply my own thermal paste to the gpu chip on both graphics cards ? rite now my top card hits 80c and my bottom card hits 63c . how much temperature drop should I see and how much fps gain will I get from reapplying my own thermal paste ?

More about : gtx 780 sli running benchmarks top card runs 17c hotter mty bottom card normal

a c 168 U Graphics card
August 10, 2014 6:04:01 PM

The top card doesn't get the same airflow as the bottom card and will run hotter. This is when the cards with the blower style coolers come in handy. I doubt there is anything wrong with the thermal grease.
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a b U Graphics card
August 10, 2014 6:12:30 PM

There's nothing wrong with your setup, everything seems to be working normally going by those temps. The only thing you can do to help lower load temps is to improve your case airflow layout. Try getting a nice high airflow bottom intake, and then an exhaust on the side panel to help remove hot air from the case. You should also make a custom fan speed curve with MSI Afterburner or EVGA PrecisionX.
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August 10, 2014 6:29:22 PM

bignastyid said:
The top card doesn't get the same airflow as the bottom card and will run hotter. This is when the cards with the blower style coolers come in handy. I doubt there is anything wrong with the thermal grease.


GRUxTSAR said:
This is why reference blower cards are better for SLI/Crossfire. You won't gain any FPS from reapplying the thermal paste. If you're not happy with these temps I'd get a different case with case fans to cool the GPUs like these cases

http://www.corsair.com/en/carbide-series-300r-windowed-...

http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...

There really is no better way to solve this problem besides watercooling

my current case is a thermaltake overseer rx-I it has a 200mm side intake fan blowing on my graphic cards . I am thinking about getting the cooler master haf x because it also has a 200mm side intake fan for my graphics cards and it is a bigger case then my thermaltake overseer rx-I so it should have better air flow
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August 10, 2014 6:41:15 PM

orndorf said:
bignastyid said:
The top card doesn't get the same airflow as the bottom card and will run hotter. This is when the cards with the blower style coolers come in handy. I doubt there is anything wrong with the thermal grease.


GRUxTSAR said:
This is why reference blower cards are better for SLI/Crossfire. You won't gain any FPS from reapplying the thermal paste. If you're not happy with these temps I'd get a different case with case fans to cool the GPUs like these cases

http://www.corsair.com/en/carbide-series-300r-windowed-...

http://www.newegg.ca/Product/Product.aspx?Item=N82E1681...

There really is no better way to solve this problem besides watercooling

my current case is a thermaltake overseer rx-I it has a 200mm side intake fan blowing on my graphic cards . I am thinking about getting the cooler master haf x because it also has a 200mm side intake fan for my graphics cards and it is a bigger case then my thermaltake overseer rx-I so it should have better air flow


Have you tried recording your temps without the side fan?

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a b U Graphics card
August 11, 2014 9:09:22 AM

You really need to try just flipping the side fan from intake to exhaust. With open-air coolers, it's more important to get hot air out than it is to get cool air in, because they dump all their waste heat BACK INTO YOUR CASE. You have a perfectly good case for airflow, you just need to set it up properly. Add a bottom intake and get that side as an exhaust, then try benching again to see if you get lower temps.
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