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Why is my top gtx 570 in sli 20c hotter than my bottom one?

post #1 of 19
Thread Starter 
My top gtx570 always runs 20c hotter than my bottom one. they are right next to eachother because of my mobo setup.

Could it be physx?
    
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post #2 of 19
Because they're stacked and the top card has no room to intake air.

Can you space them?
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post #3 of 19
Also, the top card (on most motherboards, but not always) gets used as the main card. So in addition to having worse airflow, it's doing more work.
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post #4 of 19
Thread Starter 
I can't space them out, mobo won't allow it.
    
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post #5 of 19
Quote:
Originally Posted by wick001 View Post
I can't space them out, mobo won't allow it.
Wow I just looked at a pic, what a terrible layout for dual cards.
Get more air to the top card, or a new mobo.
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post #6 of 19
Keep an eye on the temps. You're good unless the top card temps start going into the 90s and beyond.
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post #7 of 19
airflow (:
    
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post #8 of 19
I would've bought a Gigabyte X58 if the layouts weren't so terrible. That's what happens when you run two video cards right on top of each other. The one is just sucking in all the hot air from the back of the other.
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post #9 of 19
Quote:
Originally Posted by coelacanth View Post
Also, the top card (on most motherboards, but not always) gets used as the main card. So in addition to having worse airflow, it's doing more work.
Correct. SLI is setup to a master-slave relationship. The top card also combines the data images and outputs the render to the monitor.

But if your cards are sandwhiched, expect much higher temps than if you had space between each card. 20C does seem higher than normal since the 5XX series run fairly cool.
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post #10 of 19
seems normalish....

try adding a fan on the side blowing in... towards the back end of the cards if possible...

it helped my sli setup by 10 Deg C on the top card..

now there is only a 4 Deg C temp difference between the cards...
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