The LG 65" C1 TV supports HDMI 2.1, with a total of four HDMI 2.1 ports.
You can find my HDMI Cable Recommendations for the 65" C1 TV below to find the best HDMI cable for it.
HDMI 2.1 cables are backward compatible with an HDMI 2.0 port but will only support HDMI 2.0 features in that case. You will need to use an HDMI 2.1 cable with an HDMI 2.1 port to get the most features, assuming your TV and connected devices support those features. Since HDMI 2.1 is backward compatible with older HDMI versions, the easiest solution is to buy an HDMI 2.1 cable. Purchasing an HDMI 2.1 cable will ensure that you get the most out of your current and future displays that support HDMI 2.1 without worrying about incompatibilities.
HDMI 2.1 can handle higher resolutions up to 10K and faster refresh rates overall. This version of HDMI also has many features like Auto Low Latency Mode (ALLM), Dynamic HDR, Variable Refresh Rate (VVR), Enhanced Audio Return Channel (eARC), Quick Media Switching (QMS), and Quick Frame Transport (QFT).
|HDMI 2.1 Feature||Benefit|
|Increased Bandwidth||Adds support for 4K, 5K, 8K, 10K resolutions at 120 Hz.|
|Auto Low Latency Mode||Enables ideal latency setting to be set automatically. Allows smooth lag-free and uninterrupted viewing and interactivity.|
|Dynamic HDR||Lets a display alter the HDR metadata on a scene by scene or frame by frame basis.|
|Variable Refresh Rate||Eliminates stuttering and frame tearing in games.|
|Enhanced Audio Return Channel||Improves support of Dolby Atmos and DTS:X audio standards.|
|Quick Media Switching||Decreases the delay when switching video sources.|
|Quick Frame Transport||Reduces latency for smoother gaming without lag and real-time interactive VR.|
The LG 65" C1 TV supports Enhanced Audio Return Channel (eARC) functionality with the TV's HDMI 2.1 port. TVs with eARC functionality often include additional Dolby Atmos and DTS:X audio capabilities.
The LG 65" C1 TV supports VRR. Variable Refresh Rate (VVR) eliminates stuttering and frame tearing in games by syncing the refresh rate of the TV with the source.
The LG 65" C1 TV has a native refresh rate of 120Hz. Refresh rates, measured in Hertz (Hz), determine how well a TV can handle motion — the higher the refresh rate, the smoother the motion will be.
HDMI 2.1 Cable
I recommend the Anker 8K HDMI 2.1 Cable (6.6 ft) on Amazon (affiliate link).
Supports 48 Gb/s bandwidth, 8K @ 60 Hz, 4K @ 120 Hz.
Supports Dynamic HDR, Dolby Vision, Dolby Atmos, and eARC (enhanced Audio Return Channel).
Longer HDMI 2.1 Cable
I recommend the Cable Matters Certified 8K HDMI 2.1 Cable on Amazon (affiliate link).
Supports 48 Gb/s bandwidth, 8K @ 60 Hz, 4K @ 120 Hz, and chroma 4:4:4 (no compression) with HDR10.
Comes in lengths of 16 to 50 feet.
Supports eARC (enhanced Audio Return Channel), Dolby Atmos, and DTS X 7.1 and 5.1 surround sound.