CX:
4:4:2 2x 40Gb/s 2.1
Face recognition & object AI upscaling (recognizes scenes, cars, houses, distance)
C9: 4:4:4 4x 48Gb/s 2.1
Face recognition & AI upscaling (mostly recognizes if a person is on the screen and upscales accordingly, no object or scene recognition)
Actually 4K HDR 120Hz would require inho the 48Gb/s
LG crancked down hw the specs in 2020 (obvious cost saving measure)
Panel from B,C,E etc 7 series is the very same