superrocko wrote:
HDMI 2.1 only support 4K up to 120 HZ, so 144 HZ with 4K are only possible with DP1.4 and DSC enabled.
And 12 bit is not possible as I know. 8 bit is SDR, 10 bit is HDR.
I tried HDMI 2.1 with 120Hz and it let me select 12 bit, and everything was fine.
When I tried 144Hz however, my monitor went all black - I thought it was broken. I did some restart / hard reset and managed to switch to the other HDMI port to revert the settings to manually force lower settings in order to fix it. I'm not willing to test it again. It does however allow you to select 12 bit with the HDMI 2.1 at 120Hz.
Maybe somebody will laugh at my attempt, but it was on the first day when I was just trying to get 144Hz on maximum settings with HDMI 2.1 because I genuinely believed there was enough bandwidth coming out of the cables to allow for that.
DP 1.4 > HDMI 2.1 - there has to be some very finite extreme situations where this doesn't apply, which surprised me. It has to be down to the monitor, as I did not have this issue when I tried out the Asus TUF VG28UQL1A - I'm sure I only used the HDMI 2.1 cable with that and it let me select 144Hz with 12 bit straight off the bat. Sadly, that one had a dead pixel and I sent it back, I can't even remember anymore as I've gone through around 10-20 monitors and I'm happy with this one, it is on the expensive side and part of me feels like a 1440p 27" would probably be the same for me, but it's a movie setup for me and my spouse so hopefully it'll last long enough to be worth the extra money.
So far it's worked like an absolute treat - except that one scare I had setting something beyond what was capable.
