Depends heavily on the game and graphics details you want to play at. 4C4T is getting long in the tooth in some modern games for which the sweet spot lies somewhere between 6C6T and 6C12T.
In FFXV for example, I can't get more than 50fps out of my i5-3470 even if I set graphics to lowest everything where GPU load is only ~30% on my GTX1050.