Open Kodi and go to Settings - System Info
It shows the CPU speed and free, total RAM at the bottom.

It can show the HDR capability of your tv.

Make sure to use an HDMI 2.0 cable and not a 1.4 one.
Enable Enhanced Color Mode on your tv's Video/HDMI CEC options.
After powering on device, do a cold reboot then it will show the correct values if it shows none.

If your tv only supports HDR10 it will only show that.
If your tv also supports HDR10+(VP9 codec used for Youtube HDR mostly) it will show both HDR10, HDR10+ as supported.
Useful if you have an older tv and not sure what HDR modes it supports.