Hello. I'd like to build a gaming PC that can run Fallout 3, New Vegas, Skyrim, Witcher 3, and the upcoming Fallout 4 on ultra settings with many mods installed. Is there somewhere that I can buy a pre built PC that is capable of this or am I better off building my own? The reason I ask is because I am not very educated in computer or PC building terms. I am just not satisfied with what consoles have to offer anymore. Also from what I hear the modding community takes care of a lot of bugs that game developers overlook.