I think I have decided to move away from the iMac for my next computer. I change them out every 2 years, and the old model moves to a family member. So spring of next year it will be time to upgrade. My main impetuous is that I want a larger screen then 27 inches, and I want 4k. What are my options as far as outputs? Is the new mini hdmi 2.0 or only 1.4? I will never game or do heavy duty tasks with the mini. Will it be able to play 4k media smoothly?