Yeah I would say running 4k off hardware that is over a year old GPU wise and 3 years old CPU wise at over 60-80 FPS is pritty good going, lets not forget these displays dont see anything over 60hz for the time being, so having more is pointless.
Are you unutterable incapable of comprehension?
I run BF4 at 4K at 60-80s FPS with SLI 780Tis and a 4770k - all relatively heavily overclocked.
Previous Gen hardware does not. So no, it's not "Pretty good going" it's "Impossible".
You have just torched any credibility you had left with the following statement however:
lets not forget these displays dont see anything over 60hz for the time being, so having more is pointless.
Wrong. Next you will be saying the human eye cannot see more than X FPS so "What's the point"
But please, post your relatively old hardware spec that runs 4K Gaming perfectly. Everyone who runs cutting edge monster systems would love to know how to have the same experience for £500.