I have a funky issue with my amd 6950. I have my primary 21.5' 1080p monitor running though DVI and my secondary monitor, a 46'' sony HDTV (1080p) running through HDMI. They both run at 60hz. The monitors are in clone/duplicate mode. I generally use the primary monitor, but sometimes I use the HDTV which is in another room to watch movies on. However, when I am using the primary monitor and someone turns the HDTV on, the primary monitor ''blinks'' for a second or two, occasionally crashing games and such. I had the exact same setup with an old gt 240 and it never had this ''blink'' issue.