You need to be more specific. 1) What kind of FPS drops? Is it at random or when there is a lot of particle effects going on? 2) What games are you referring to? 3) Is this when all settings are maxed out? Anyways, I only play two games, BF3 & BC2 and out of all the video cards I've tested ATi/AMD seem to struggle the most when there is explosions going on.
i mostly play left 4 dead 2. and when there is fire or the acid spit on the screen with a hoard the fps drop quick. i also play maniaplanet and its in there also. but just recently i am using afterburner and disabled power play and overclocked it some. and that helped a ton but still notice some drops quick. but shutting off power play did help. i had a 4870x2 and played at the highest settings very smoothly with the same hardware. before the 6970 i had a 6770 and it played very smooth for that card. seems like the 6770 had better stable frame rates. and i did try other settings on the 6970. so im at a loss trying to find out the issue. thanks