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Help with strange crossfire behavior

post #1 of 8
Thread Starter 
GPU1 has a lesser cooler
GPU2 has a better cooler

Normally, GPU2 is above GPU1 (because of its better cooler). I've had it this way, but while trying to troubleshoot some crossfire issues I switched it around. I put GPU1 above GPU2 and I noticed in Furmark each card was stressed 99% all the time. I moved GPU2 back on top of GPU1 and now Furmark is stressing each card ~90% +/-5%.

Should I do another Driver Sweeper run or is this normal behavior?
post #2 of 8
post the temperatures while doing a furmark burn along with the current configuration of the cards.
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post #3 of 8
Thread Starter 
GPU1 above GPU2
Both cards 99% usage
GPU1 max temp 91c*
GPU2 max temp 58c


GPU2 above GPU1
Both cards ~90% with 5% fluctuation
GPU1 max temp 80c
GPU2 max temp 90c



*After it surpassed 93c the card began throttling down the GPU usage and the clocks began slowing down. Which is why my normal configuration is GPU2 above GPU1
post #4 of 8
hmmmm, what else have you tried?

im thinking it some sort of thermal limitation, but i honestly cant be sure.
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post #5 of 8
Thread Starter 
I don't know what else there is to try. I think I'll run Driver Sweeper again and reinstall 11.2 (when I moved my cards back to their original positions, I had to reinstall drivers)
post #6 of 8
Maybe that one card has something to do with your cfx issues too?
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post #7 of 8
Thread Starter 
It was the replacement card I got from an RMA. I could RMA it again but I don't know if XFX will refuse it.
post #8 of 8
if it works i doubt they'll take it
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