I currently have a I3 2120 paired with a gtx 750 ti 2 gb sc but am wondering if I should upgrade to a I3 3220 and how much of a difference in gaming I would notice. I'm also planning on buying the cpu used. (I play alot of Call of Duty Black Ops III which isn't extremely demanding but I don't think my setup would run gta V very well with my cpu) I would appreciate your feedback!