I do not have the option to enable Crossfire. I used to, but it is not there now. I have two HD 6870's that are exactly the same. The bridge is installed. I have reseated both cards and the bridge. I have uninstalled drivers and updated to Crimson. I did notice that my PCI-E slots indicate that one card is runing x8 and the other is running x1. I see no option in my M5A99X EVO Rev. 1 to change these settings. I would appreciate any help, as I would love to play the new Start Wars Battlefrom game, and I think crossfire might be the issue that is causing the game to crash upon loading.