I plan to upgrade my pc to gtx 1080 ti and i7-7700k, and my monitor is 1440p 144hz. I am not sure if I need to upgrade my rams and PSU. My ram is G.SKILL TridentX 2x8G, DDR3 1866 (PC3 14900), and my PSU is corsair ax1200. Also, my liquid cpu cooler has been used over 2 years, need a upgrade?