Huge temp difference on 2 SLI cards, my older has always been bad it seems

NerevarReborn

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Jul 10, 2012
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I have asked before why my MSI GTX 970 was running so damn hot. It seems to have to push fans to 80% to maintain a fairly high 72 degrees celsius in many games. In a very well cooled and clutter-free case. I just got another identical card for SLI, and usually that would mean both cards got slightly hotter. The old card is still on 72-73, so it hasn't changed despite another card under it. The new however, with an identical fan-profile in MSI Afterburner reached 60 degrees when I benchmarked Heaven 4.

That's 13 degrees celsius difference. And a lot in noise-level. Should I RMA my old card? Or would this be an acceptable temp diff to MSI? Will I have to jeopardize my warranty and open up my first card and try to fix it myself? Because this is totally not acceptable to me. I have been after a quiet and cool rig from the beginning. Having to push the loudest fans in the case (even though they are good for GPU fans) an extra 15+% for one cards defective cooling is not ok.

Edit: read post 3 steps down, hadn't closed case, it's even worse.
 
Solution
Top card will always be hotter in SLI/Crossfire solutions.
Try setting a fan profile for your cards. I have my GTX780 set up with a fan profile that will not allow the fans to go over 70% max rated speed at 80C. My card never hits 80C, usually around 73-74C when playing games (this is with my card being overclocked.) and the fans at most have hit 64% of the max rated speed.

Edit: Read your post again and i see you have an identical fan-profile for both cards.

SkylerJacobs

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Top card will always be hotter in SLI/Crossfire solutions.
Try setting a fan profile for your cards. I have my GTX780 set up with a fan profile that will not allow the fans to go over 70% max rated speed at 80C. My card never hits 80C, usually around 73-74C when playing games (this is with my card being overclocked.) and the fans at most have hit 64% of the max rated speed.

Edit: Read your post again and i see you have an identical fan-profile for both cards.
 
Solution

NerevarReborn

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Jul 10, 2012
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Yea, I forgot I hadn't closed the case yet. So I did. Stock speeds, now my old card hit 78 degrees at 82% fan speed. If that is good cooling from MSI I don't want to see their bad ones. I'm borderline throttling the card on stock now. Top card was at 80-85% power, bottom one on 70-75%.

Bottom one was happy to land on 62 degrees at 58% fan speed. 16 degrees cooler.

Is this still ok SLI difference on identical cards? I think my old card has a heat sink that is hardly touching the actual GPU chip.
 

NerevarReborn

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Yes I have an agressive custom fan curve since my old card was so damn hot. 25% @ 40 degrees to lower Idle and keep fans spinning. Then straight to 80% on 75 degrees, and 100% on 95 degrees (have never seen above 78, this was a new record). Old record high was 76 I believe.
 

NerevarReborn

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Just tried new card solo (physically removed other and placed new at top slot), it ran the benchmark with the same fan profile at 62 degrees @ 59% fan speed.

That is at least 10 degrees cooler than my old card. Same everything else.
 

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