I have a Dell optiplex 3020 full size I got for a deal. I added a 850w corsair power supply, installed 8g of RAM, a gtx 1060 3g that I also got cheap and a WD 1tb ssd. It plays pretty good for most games but I know it won't hold up very long to new games coming out. Money is tight and I didn't know if there was upgrades that would help out. I know enough about gaming computers to be dangerous but I don't really know much about the compatibility of different parts and how one affects the other. For example: I have heard I could put an i7 in it but will it work, is it worth it, will I get much performance upgrade for the money spent?