Bandwidth: 2.0 is 18Gbps bandwidth, 2.1 is 48Gbps bandwidth; resolution: 2.0 supports up to 4K@60Hz, 2.1 supports 8K@60Hz and 4K@120hz; variable refresh rate: HDMI2.1 support, 2.0 does not support.
HDMI means High Definition Multimedia Interface. This standard was initiated by 7 companies including Sony, Hitachi, Panasonic, Philips, Toshiba, Siliconimage, Thomson (RCA) in April 2002, and it unifies and simplifies users. Terminal wiring replaces analog signal video and provides higher bandwidth data transmission speed and digital lossless transmission of audio and video signals.
1. Maximum broadband capacity
The maximum bandwidth capacity of HDMI 2.0 is 18Gbps, while HDMI2.1 can operate at a maximum rate of 48Gbps. Therefore, HDMI2.1 can transmit more information, and the transmitted picture has a higher resolution and a higher frame rate;
2. Resolution and frame rate
The new HDMI 2.1 standard now supports 7680×4320@60Hz and 4K@120hz. Among them, 4K includes true 4K with 4096×2160 pixels and 3840×2160 pixels. In the HDMI 2.0 specification, only 4K@60Hz is supported at the highest.
3. Play smoothness
When playing 4K video, the frame rate of HDMI2.0 is higher than that of HDMI2.1, making it play more smoothly.
HDMI2.1 has a variable refresh rate and fast frame transmission function, these two functions can reduce the delay and may completely eliminate the input delay.
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