hdmi 2.1 via DP adapter?
Posted: 13 Mar 2024, 03:30
Hi,
I've recently set up triple 4k monitors, but have had to limit them down to 120Hz and disable g-sync to prevent black screen issues. I believe the black screens were mostly caused by the displays switching to DSC mode, but at 120Hz they stay below the data rate for DP.
It's not a huge deal, as it's virtually impossible to get 120fps on most games at triple 4k anyway, and I don't see any/much difference visually between 120 and 144....
...but in theory, HDMI 2.1 has a larger data rate and doesn't rely on DSC, so I should be able to set the monitors at their full rate and not worry about getting black screens (especially when tabbing out of a game)?
However, my GPU (Strix 4090 OC edition) has only 2 HDMI, but 3 DP ports.
If I were to use 3 HDMI 2.1 cables, 2 plugged straight in to the GPU, but one plugged into the GPU via a DP to HDMI adapter....will I still get the full benefit of HDMI 2.1....or will it have the limitations of the DP 1.4?
I also get the black screen issues when I try to use the bezel corrected resolution that NVidia surround sets up (which is sound 120 pixels wider than the combined res of the 3 panels)....do you think this is likely due to DSC too? or just because the res is then so wide (it's 11640x2160, instead of 11520x2160)?
I've recently set up triple 4k monitors, but have had to limit them down to 120Hz and disable g-sync to prevent black screen issues. I believe the black screens were mostly caused by the displays switching to DSC mode, but at 120Hz they stay below the data rate for DP.
It's not a huge deal, as it's virtually impossible to get 120fps on most games at triple 4k anyway, and I don't see any/much difference visually between 120 and 144....
...but in theory, HDMI 2.1 has a larger data rate and doesn't rely on DSC, so I should be able to set the monitors at their full rate and not worry about getting black screens (especially when tabbing out of a game)?
However, my GPU (Strix 4090 OC edition) has only 2 HDMI, but 3 DP ports.
If I were to use 3 HDMI 2.1 cables, 2 plugged straight in to the GPU, but one plugged into the GPU via a DP to HDMI adapter....will I still get the full benefit of HDMI 2.1....or will it have the limitations of the DP 1.4?
I also get the black screen issues when I try to use the bezel corrected resolution that NVidia surround sets up (which is sound 120 pixels wider than the combined res of the 3 panels)....do you think this is likely due to DSC too? or just because the res is then so wide (it's 11640x2160, instead of 11520x2160)?