Custom Resolution Utility (CRU)

[Dump777]

(09-07-2024 08:53 PM)ToastyX Wrote:  

(09-07-2024 07:53 PM)Dump777 Wrote:  ok so i added 2560 x 1440 with 144hz again manually (its already there in displayID) and now i do see pop up in nvidia control panel too but 2560 x1440 @ 160hz gave me a black screen (maybe its because of the HDR thing which i am not sure how to specifiy it should be at 4:2:2 or whatever the case) trying to see now if i can re-add 3840 x 2160 @144 hz and see if it appears)

the ones marked red show up in control panel
P.S 1440p @144hz does work with HDR 8bpc (604MHz pixel clock)
P.P.S can confirm 2160p @144hz also does not show up (not sure how is 2160p @120 NOHDR 8bpc is over 1000Mhz is working and 1440p @160hz does not (goes HDR by default), not sure how to restrict NOHDR for 1440p maybe it works then ?)

Please let me know how do i get NO HDR with 1440p so i save some bandwidth at push up to 160hz maybe ?

I have a ticket open with MSI to see what they have to say? maybe we get some more answers there but i'd would not be surprised if HDMI FRL is the issue? but could it be that these 2160p is being picked from TV resolutions ? im clueless)

You should also ask Acer because the limitation is coming from the laptop. You can turn off HDR in the Windows display settings. It's possible the monitor won't accept 2560x1440 @ 160 Hz even if it supports 160 Hz at the native resolution.

You need to look at both the color depth and the color format for the maximum pixel clock:

8 bpc/4:4:4 = 600 MHz
8 bpc/4:2:2 = 900 MHz
8 bpc/4:2:0 = 1200 MHz

10 bpc/4:4:4 = 480 MHz
10 bpc/4:2:2 = 720 MHz
10 bpc/4:2:0 = 960 MHz

YCbCr 4:2:0 only works with TV resolutions marked in the capability map, so that's where 3840x2160 @ 120 Hz is coming from.

You can specify the output color depth and color format in the NVIDIA control panel in the section where you change the resolution (it's in your first screen shot), but you shouldn't need to because it should use whatever is available.

I'm not sure how much I understood how I can adjust the bpc and color depth etc but will definitely try to see what can work and what doesn't and will see if Acer can give me any answer , the preset modes don't show 160hz like you said but it 144hz does work idly. If not will just stick to 2160p 120hz and 2160p60hz or 1440p@144hz for HDR. Thanks for the great detailed info but yeah HDMI specification and terminology is a huge mess