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 SFF PC Intel Core i5-4570 3.30GHz 16GB Ram 500GB Win 10 Pro | eBay
Dell OptiPlex 9020 SFF Desktop Motherboard XCR8D 0V62H at Rs 4500 | Dell Desktop Motherboard in Mumbai | ID: 20532145591