[anoother]

True, but boards/laptops very rarely have the required Displayport or HDMI 2.0 outputs to drive such resolutions at native refresh rates.

[TazeTSchnitzel]

With HDMI, the problem is the chip itself, as until Kaby Lake Intel hasn't supported HDMI 2.0 in their CPUs. Sufficiently new DisplayPort has been supported a while, though, but you'd need a motherboard supporting it, as you say.