If you have your 4690k oc to at least 4.3 and above, you will have ST power sufficient to drive most modern games that are not called ass creed/battlefield/rainbow six open world games.

AMD leading in core counts but still losing out in latencies which gives intel the slight nod in gaming performance at the very high end.

When next XBox and Ps come out, then you will need to move up to 8cores too.