One of Two (SLI) GPU's Gets Really Hot

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Troof2Troof

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Hi,

So I finally got a new EVGA GTX780 SCX for SLI. It works well, I think it does at least. The one weird thing is that the top card (no matter which one I used because I switched them) gets super hot. 68 degrees compared to like 43 degrees on the bottom....

Makes me nervous to do a long gaming session. Normally I would assume one of the cards is funky but no matter which one goes in the top pcie slot, it still gets way hotter than the other on eon the bottom.

Any thoughts? Thank you
 
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Agree with both posters before me.

The top card in any multiple GPU setup will get hotter, always. This is due to the cards being close, and the fact that heat rises.

I get similar temperatures (although temps are closer together) with my 780s.
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babernet_1

babernet_1

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The reason why is the top card has its intake partially blocked by the other card. 68 degrees is not all that bad. Many motherboards allow you to put three spaces between the cards for extra breathing room. What is your motherboard? Will your case allow a side fan to blow right on the video cards?
 
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clonazepam

clonazepam

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You want to make sure you have SLI enabled in the nVidia control panel. That's a pretty big discrepancy between temperatures.

2ahf5g4.jpg
 
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enemy1g

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Agree with both posters before me.

The top card in any multiple GPU setup will get hotter, always. This is due to the cards being close, and the fact that heat rises.

I get similar temperatures (although temps are closer together) with my 780s.
 
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Troof2Troof

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Whilst I know your answer makes sense, it's still a question.....
 
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Troof2Troof

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that was my obvious first step after installing the drivers...
 
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Troof2Troof

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i know heat rises...... my case is on its side....
 
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clonazepam

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Covering the obvious first, is just exercising "best practices" when troubleshooting anything. One time I assumed a fellow had fully seated all of the power cables into his graphics card. I started troubleshooting beyond that step, and regretted it. It's not any reflection on your knowledge, but a reflection on my experience of helping thousands of people in person, on the phone, and in forums.

Are these temperatures consistent in all programs? A specific benchmark? The second card is running at a temperature higher than idle, and lower than full load. It's good to question it. I push the 580s to 87 degrees, and they run within 5c of each other.
 
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Troof2Troof

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Yea I know, always best to check the most obvious thing first :) During idle its perfectly fine, one card is 2 degrees warmer. I'm still trying to figure out if certain games are causing it. Right now, I think the main culprit is the new batman game....and only when I minimize it and do other things on the desktop....
 
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xxhonchoxx

xxhonchoxx

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I don't think being side by side makes them hotter because mine runs a pretty normal temp of 45c on full load if you put a outside fan to blow into the cards this can cause problems because the gpu card uses the side vents to blow air out. so if you have a fan blowing in and it trying to blow out it can screw up the venting.now if you have the outside fan exhausting hot air this is the win factor. your gpu also has a exhaust port on the back where you plug your connections into the gpu. make sure that it is not blocked by your rails that can be bad also. but anywho your gpu's are going to get hot it's part of the deal as long as you see a stable temp which doesn't climb or lower you should be good but if it starts rising then you have a problem.in my opinion you are over thinking it just let them break in and have fun
 
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