I agree with sehs33.  I have the ROG Swift PG27AQ which does 4k/60 on the DP, but only 4k/24 on HDMI.  I was planning on buying the Playstation 4.5 when it comes out, and hooking it up to this monitor with some sort of hdmi 2.0 to DP 1.2 adapter.  I hope that by the time the PS 4.5 is released that there will be such an adapter!