The thing with the old cod series (including cod4) is that there are some sweet fps spots which help you shoot faster, jump higher, float longer and stuff like that.. My monitor has 75hz refresh rate, but doesn't matter for me to see 250 fps, just to be able to have that so i can use them in game . There are hundred of videos in youtube that explain this stuff. Hmmm, but ok if cod4 is a bit off for you, what about counter strike global offensive.Can i make something to run that game on 200 fps on 1280x1024 with low settings? maybe Highest, who knows