My 6800 just got past the 2 year mark and now it seems to be showing signs of dying.
I keep getting my main display port display disconnecting every few hours. I have to do a hard reboot of the computer to get the screen to work. I've got an HDMI display plugged in as well, that doesn't disconnect. I've tried multiple Display port cables, tried reducing the frame-rate on the display. My drivers are fully up to date as well, and the issue has been occurring on older drivers as well.