I have upgraded out of a FX 8350 with a M5A99FX PRO R 2.0 and thinking of using it to build a home server. Would use for some gaming ( 3 or 4 max players) plex, and files. The motherboard has 8g of ram. I am sure this is not enough but can be upgraded. I would also add a be quiet hard rock cooler for cpu. As for games Farm Sim, Minecraft not sure on the others as they are games my 9 year old plays. I am very new to servers so this would be a starting point only. For OS not sure if I would go ubuntu or windows.