If you trying to pull more frames on Arma 3, then it's purely a matter of what cpu you have since it's a cpu intensive game. Since you have a 4770k you should be getting nice frames. Since I'm assuming you are playing other games, then grab the 1070 as it's price/performance ratio is unbeatable. That card will easily pull 60+ frames on 1080p. With the $200 you save, you can always put that towards adding in another 1070 later on if you need to pull more frames.