I also have the 7950. Mine's a 3GB GDDR5 one though. Although, GTA IV runs only at medium settings with around 55FPS average with a decent amount of stuttering, although it should be able to run at High/Very High without any problems at all.
from what ive heard on the net GTA IV is a very poor port on pc when infct any 7950 should be able to run literally every modern game on ultra cause i can run bf3 on ultra and it only uses about 1GB of video memory
Yeah it is. I had to change commandline.txt to get it playable with minimal stuttering to this: -noprecache -memrestrict 3145728000 -restrictApp 0 -norestrictions -availablevidmem 40.0 I think it's just because GTA IV doesn't support cards with over 2GB properly. :/