Monstieur
Recent posts
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Replied to CAC-1085 works flawlessly on my 1080TI with Samsung Q90T @ 4k/120Hz/422/10bit HDR
There is no need to run 10-bit RGB at a lower refresh rate. HDR 120 Hz 8-bit dithered RGB with a custom resolution is equal or superior to a 10-bit signal with…
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Replied to CAC-1085 works flawlessly on my 1080TI with Samsung Q90T @ 4k/120Hz/422/10bit HDR
You can do HDR 4K 120 Hz 8-bit dithered RGB on DisplayPort 1.4 without DSC by creating a custom resolution with reduced blanking. There are instructions on var…
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
Windows 10 has supported 8-bit RGB / YCbCr444 with dithering for HDR since the beginning. It automatically uses dithering when running in a full colour samplin…
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
You get HDR on Windows with 4K 120 Hz HDR 8-bit with dithering RGB, which is supported by the adapter, C9, and CX. We don't know if 4K 120 Hz HDR 10-bit 4:4:4…
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
He's talking about 8-bit vs 10-bit in the industry i.e. 8-bit (typically 4:2:0) used for SDR vs 10-bit (4:2:0) used for HDR. This is the context in which those…
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
You've been misinformed by marketing. All the points you listed are false. They're "true" only for low quality 4:2:2 or 4:2:0 subsampled signals that Blu-ray p…
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
No it doesn’t. Consoles and Blu-ray players which output subsampled YCbCr420 need 10-bit to prevent banding. A YCbCr444 / RGB source with full colour sampling…
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
No it doesn't. Consoles and Blu-ray players which output subsampled YCbCr420 need 10-bit to prevent banding. A YCbCr444 / RGB source with full colour sampling…
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
40 Gbps is enough to do 4K 120 Hz HDR 10-bit RGB / YCbCr444, which is a resolution supported by the C9 / CX according to LG. 8-bit should definitely work. Only…
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
It does not need DSC to output 4K 120 Hz HDR 8-bit with dithering RGB / YCbCr444. There's no need for 10-bit and DSC for HDR.
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
With DSC, the adapter may be able to do 10-bit.
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
I don't see why not. Current DisplayPort 1.4 4K HDR monitors without DSC can already do 4K 120 Hz HDR at 8-bit with dithering YCbCr444 / RGB.
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
Sorry, I meant the above is the limit of HDMI 2.1. The DisplayPort 1.4 output on current GPUs without DSC can do 4K 120 Hz HDR 8-bit with dithering YCbCr444 /…
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Replied to USB-C to 4k 120hz HDMI (or HDMI 2.1)
You cannot tell the difference between 8-bit with dithering YCbCr444 / RGB and 10-bit YCbCr444 / RGB in either HDR or SDR. However with YCbCr422 / YCbCr420 sub…
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Replied to CAC-1085 allow 4k@120hz with 4:4:4 ?
It should allow up to 4K 144 Hz HDR 10-bit YCbCr444 and RGB, if not 12-bit. You can already do 4K 120 Hz SDR 8-bit YbCr420 on HDMI 2.0 if the TV supports it.