Ok i was looking at some graphics cards but i don't know what is going to do the best, i have a 375w psu and a 1280x1024 monitor and i was looking at the gt 640, 630, 620, hd 6670, 6750, 7730, 7750 and i would like to know which one would be the best value/performance and play games from 2011 and before at a good fps (40+).