Budget: $500.00-$600.00
Resolution: 1980x1020
Games / Settings Desired: Average
Any other intensive software or special things you do (Frequent video encoding, 3D modeling, etc) No
Country: Canada
Parts that can be reused: No
Do you need an OS?: Yes
Do you need peripherals (e.g. monitor, mouse, keyboard, speakers, etc)?: No
He will mainly play stuff like CS:GO and League, nothing too intense.
That is about as good as its gonna get. That's a great video card for the budget. You could try and pick up a last generation i3 or so but you probably won't see a huge difference. That build will play wow pretty damn well.