X-Fire 7970's running in different bus speeds

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VanHalen3531

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Sep 5, 2013
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About a week ago I installed a second 7970 with no problems with the latest beta drivers, 13.10. I can run games like Tomb Raider with FPS well above 30. I did notice that the fans on my GPU's were running fast, so I checked GPU-z. Upon doing so, I discovered one card, the one my monitor is connected, was running in standard PCI-E x16 @x16 1.1, and my second was running in PCI-E x16 @x4 2.0. Is that normal or is there something going on I need to look into?
 
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Drew010

Drew010

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May 11, 2013
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AMD didn't release their 13.10 beta drivers until 2 or 3 days ago, and it fixed that issue of the second card running way too hard at 1.1 using 13.8.
 
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VanHalen3531

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Sep 5, 2013
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So you're saying that's normal then?
 
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Drew010

Drew010

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May 11, 2013
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Use the AMD uninstall utility, and then re install the new 13.10 beta drivers and it should fix that.
 
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VanHalen3531

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Sep 5, 2013
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It did for a little bit, but then the fans kicked back in. I also happened to look up the specs on my motherboard and the second card is actually plugged in to PCI-E x16 @x4 slot. That was a mistake on my part when I bought the motherboard, I never thought I'd using a X-Fire setup. Could my main card be taking up the slack as a result of the lack of performance from the second card?
 
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