I think an i7 and a decent overclocked 7950 is enough for this game and i have a video on youtube in the morning to prove it. With BF3 it was 'oh ur gona need 2x 580's to play this maxed out'. Now were getting similar comments for BF4 and this just isnt true. I'd question peoples system if it cant be played on similar hardware that others run BF4 fine on. Of course there is some bugs but thats to be expected. I'm on Windows 7 Home Premium and its running rather peachy for me
Btw i ran BF4 maxed out @ 3840x1080 earlier and it was using 2.6GB VRAM over about 10-15 minutes. Obviously not playable on 2 screen with crosshairs split between them but i just wanted to test it out. I was averaging around 30-40fps
7950s just have a LOT more horsepower than any 680/770 (Doesnt become noticable until you actually push them, BF4 DOES push them). I never doubted that 7950s would run BF4.