GTX 970 SLI - Massive difference between cards temps

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Nachmanowicz

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Nov 19, 2011
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Hey there. Ever since I set up this SLI Im getting massive difference between cards. I tend to get 10C difference between 'em when stressed!

I just ran Uningine Heaven Benchmark and I had 68C in one and 58C in the other. They are installed side by side, maybe I should try installing 'em more far apart? I use a SOC Force mobo. And a Haf X 942 case, with a side fan included, air intake. Maybe it's a bad idea? Shud I try as a exhaust or without it at all?

Thanks!
 
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T
First, one card is always going to have better airflow than the other, so there is that.

Second, the cards dont do the same thing. If you want to learn more about this, Google the specifics on how the processing loads are distributed between GPUs in SLI.

Your setup is nothing to worry about. Go play a game, NOT A BENCHMARK, and see what your temps are like. Don't get obsessed with processor temps until you get close to the thermal design limit. Too many people make a huge deal about ultra low temps, it's silly. You're fine. :)
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jimmysmitty

jimmysmitty

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Oct 5, 2007
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Even if you have more space between them the top one will always be a bit hotter. The primary card does more work and as well will pull a bit of heat from the back of the secondary.

The side fan is fine, keep it as an intake fan as it will bring cooler air from outside the case into the GPUs so they wont have to pull air from the front that will be warmer thanks to HDDs and SSDs.
 
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tigerg

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Feb 24, 2013
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First, one card is always going to have better airflow than the other, so there is that.

Second, the cards dont do the same thing. If you want to learn more about this, Google the specifics on how the processing loads are distributed between GPUs in SLI.

Your setup is nothing to worry about. Go play a game, NOT A BENCHMARK, and see what your temps are like. Don't get obsessed with processor temps until you get close to the thermal design limit. Too many people make a huge deal about ultra low temps, it's silly. You're fine. :)
 
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jimmysmitty

jimmysmitty

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Oct 5, 2007
21,605
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quotemsg=16138709,0,1105385]First, one card is always going to have better airflow than the other, so there is that.

Second, the cards don't do the same thing. If you want to learn more about this, Google the specifics on how the processing loads are distributed between GPUs in SLI.

Your setup is nothing to worry about. Go play a game, NOT A BENCHMARK, and see what your temps are like. Don't get obsessed with processor temps until you get close to the thermal design limit. Too many people make a huge deal about ultra low temps, it's silly. You're fine. :)[/quotemsg]

Not sure how helpful this is. The primary card will always be warmer because of the two factors I stated, it will do more processing and have to deal with warmer air from the back of the lower GPU.

Second, if you have them in straight SLI both GPUs will be doing the same thing but the primary one also has to display the information making its load a bit higher. They will, however, be processing the same frame.

Computers run warm. For the most part CPUs will run at about 50c (under load depending on cooling on it) and GPUs will run from 50-90c (depending on the GPU and load). Add in the rest (HDD, SSD, DVD/BR, motherboard, RAM etc) and the fans venting the heat you will feel it a bit.
 
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