My HD4870 runs it on 40fps+ - all maxxed out, 1x AA and 4x AF @ 1080p res.
Damn, that is kind of fun actually. But in some ways im not that impressed, im buyng the game anyway. Too long combat range for me (like assault has no point at all). Maybe because i sucked bigtime, i got like 1 kill per 10 deaths. Im more of a type to take aim and then shoot shots one by one - at this point of time i get pwnt already. Graphics is good in my opinion, i dont look into serious graphics - its about the gameplay and the specific features and details in the game. Sound, just epic - "holy s***" will do it. Close combat is kinda sucky in my opinion - must get used to the timing of the knife animation. Vehicles are awesome too, physics seem to be pretty good (not too arcadeish) - but the only thing that turned me off a bit was the buggy sound at some places. Some trees went nuts too after i shot them. I think i need to play it a bit more to get the real feeling out of it - should be worth the money it costs.
Also, i turned on my mic (no idea why) and i didnt know it stayed on all the time. I was basically breathing in the mic and stuff and then one russian guy told "deactivat vosja bitch" ... i was like wtf. Then i realised and turned of my mic - after that he was whistling around sometimes. But it was kinda hilarious tho
Great game i must say.