how far back can you go on a cpu and it still be decent? my mom was talking about buying a desktop earlier and i feel that i can just build her one instead. She doesn't need any high tech graphics or gonna be gaming or video editing or nothing. gonna be extremely basic with just enough to get her to do basic stuff on there for when she starts a new job. Was looking at the Intel either I5 or I7 at most. Don't know about the I3 tho, Definitely not an I9.