Hi guys, I'm wondering if it's worth upgrading from an i5 4690K (No OC) to an i7 6700K, and from a GTX 980Ti (no OC) to a GTX 1080.

I'm only planning on playing in 1080p, and I only use my RIG for games and videogame design.

If you do think I should upgrade, what motherboard and DDR4 memory do you suggest and why?

Thanks in advance.