minecraft is a cpu intensive game so better the cpu means more fps u get in minecraft and for the rest of the games the gt 750 ti would give u good results in high to medium settings for the case i will suggest the nzxt phantom 410 its a very good mid tower case with awesome cooling system 3 inbuilt fans 2x 120 mm and 1x 140 mm and also comes with a mini fan controller ............http://www.amazon.com/NZXT-Phantom-Tower-Gaming-Case/dp/B006I2H04I/ref=sr_1_1?ie=UTF8&qid=1407822947&sr=8-1&keywords=nzxt+phantom+410