A:Answer Per RTings.com:
The LG C1 OLED replaces the LG CX OLED, and overall they're very similar TVs. The biggest differences are that the C1 comes in a larger 83 inch variant, has the newest version of webOS, and includes new 'Game Optimizer' settings, including an input lag boost that reduces input lag by a few milliseconds. Our unit of the C1 has poor out-of-the-box color accuracy and lower brightness compared to the CX, but this could just be due to panel variation. All things considered, if none of the minor additions are essential to you, the CX may offer a slightly better value.
The LG CX OLED and the LG A1 OLED deliver nearly identical picture quality, but the CX offers better gaming features. The CX has 4 HDMI 2.1 ports, and it supports more advanced gaming features like variable refresh rate technology (VRR). The CX is also a bit better for movie watching, as it can remove judder from any source, and it has an optional black frame insertion feature to reduce persistence blur.