Never judge a book by its cover(Dell optiplex 9020 SFF)aka an office computer with 16GB ram a SSD the i7 4790 and a Nvidia GPU. Not the greatest but pretty decent imo. :
Dell Optiplex 9020 » builds.gg
Dell Optiplex 9020 MT Intel Core i5-4570 3.20GHz CPU 8GB RAM DVD-RW No