R7 250 running at PCIE 3.0 x8 instead of x16

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thebardstale

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Jun 19, 2014
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Hi I have a XFX R7 250 that is running at PCIE 8x instead of 16x. I need it to run at PCIE 16x so I can crossfire with the CPU. GPU-Z shows it running at 8x (even with the render test) and the CrossfireX option doesn't show at the Catalyst Control Center. I have already checked that it's properly plugged into the first PCIE slot, but I don't know what else to do.

Here's my hardware:
AMD A10 7850k
XFX R7 250
ASUS A55BM-A

Any help from someone more knowledgable than me is greatly appreciated!
 
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thebardstale

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Jun 19, 2014
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I tried updating the BIOS, I downloaded the latest BIOS for my MB from the ASUS website and put it in a FAT-32 pen drive, but the EZ Flash 2 utility gives me a "Security Verification Failed" when I try to update it.
 
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thebardstale

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Jun 19, 2014
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Ok I managed to update the BIOS and things are improved, I now have the latest BIOS running. The R7 250 now runs at PCIE 8x 3.0 instead of 8x 2.0, but I still can't do the crossfire with the CPU.

Any more help on this is greatly appreciated.
 
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