So I am building a cheap mid gaming system for my brother-in-law and these are the choices. Will be running 1440 x 900 display. This is to play Starcraft 2. I just want to future proof the system so he won't need to change it later. I believe the 6850 will be more worth it, and if I can unlock the 2 extra cores I will be in luck. Is it worth it to save $35 or for the difference just get it and forget it. Thanks guys again for opinions.