7770 crossfire issues

Hardware GPU
1

I have had my 7770 crossfire setup for a few weeks now and i just noticed somthing when i compared the two cards together in gpu-z.

I found an image of someone with a simmilar problem. As you can see one of the cards in the crossfire setup is running on a 32 bit bus, instead of the full 384. One of my 7770's is running on 128 while the other is stuck on 32bit.

Both of my cards are running PCIe Gen 3 at x8 speeds on my sabertooth z77. Does anyone know how to solve this issue?

2

Reinstall the drivers, checking clean install. If that does not work, try using driver sweeper to completely get ride of the drivers and reinstall them. Make you you download the catalyst crossfire profiles.