Notably, the P14s Gen 2 (AMD) supports dual 4k60 via the USB-C DisplayPort 1.4 and VESA DP Alt Mode. I believe it also supports DP1.4 Display Stream Compression (DSC), so when paired with a DSC-capable dock/monitor, you might drive up to 2x-3x higher data rates.
There is no such thing as an "HDR HDMI" cable or an "HDMI 2.0" cable. That second one is important. HDMI cables don't have version numbers. The connections have version numbers. So your
MaZa said: Ycbcr can send 4:4:4. Ycbcr is a a signal format different from RGB and meant to be more efficient. Ycbcr has Luma (brightness) information separate from chroma (color) which allows the subsampling of the latter (4:2:2 and 4:2:0) for more bandwidth but when you use 4:4:4 its virtually identical with RGB.
HDMI 2.0 is still something to get excited about, just not for your current home theater. HDMI 2.0 represents an official standard for sending 4K video at 60 frames per second over a cable. This
However, it is widely known that the maximum bandwidth of HDMI 2.0b is 18Gbps. Using any of the available online HDMI bandwidth calculators (Murideo has a good one), you will find that a 4K (actually UHD 3840 x 2160) 60Hz signal with 10-bit color and 4:4:4 chroma uses 20.05Gbps bandwidth and is therefore incompatible with HDMI 2.0 devices and
HDMI 2.0 Input (Unencrypted) HDMI 2.0 Output (Lag-free passthrough) Input: HDMI 2.0; Lag-free passthrough up to 2160p60, 1440p120, 1080p240, Variable Refresh Rate(VRR), High Dynamic Range (HDR) Capture: 2160p30, 1440p60, 1080p60 HDR, 1080p30, 1080i, 720p60, 576p, 480p; Learn more about which resolutions are supported by HD60 X. wEANw. 487 495 70 130 123 451 130 192 364

does hdmi 2.0 support hdr