A couple of months ago I bought a radeon 6870. I most play world of warcraft and a few other games. When I bought it I was able to raid on ultra setting at 40-60 fps, now im getting 20-30 on good. I've been seeing a steady decline in my fps over time and now it's to the point of performing worse than my old 9800. Is there anything I should check/do?
Check the temperatures and also, are your drivers up to date ?