Chroma sub sampling has nothing to do with HDR. UHD bluray for example is 4:2:0 regardless of HDR10/DV. HDMI 2.0 can do 1440/120 4:4:4 no problem, that’s less bandwidth than 4k60.No, my device does not have a HDMI 2.1 port so it cannot physically support the bandwidth needed for 4k120, as even 1440p120 requires dropping from 4:4:4 to 4:2:4 chroma subsampling (no HDR).
Edit: It also looks like the Q85 cannot physically support it either.
Edit: got my sums wrong. But still point stands that HDR works in 4:4:4 4:2:2 or 4:2:0, pretty sure both current gen consoles use 4:2:2 10bit 4k60.
Last edited: