Last year DisplayPort management VESA association announced DisplayPort Alt Mode 2.0 protocol, DP2.0 can seamlessly with USB4 standards, thus in the Type - C

Equipment to 80 Gbps super bandwidth between DP audio and video data, for the games, AR/VR field to provide more solutions.

DP2.0 carry USB Type - C physical interface, Keith shield the first thought of as a Type - C shape USB4 and lightning 4, especially the lightning 4, with 40 GBPS

Transmission bandwidth and PD100W charging ability, lightning 4 almost meet the usual USB Type A, Type C, HDMI and DisplayPort, VGA, RJ - 45, 3.5 mm

And so on various protocols, has realized the PC multi-port unity. So as members of the new DP2.0 DP2.0 and lightning performance, 4 DP2.0 compared with USB4 what advantage?

First of all from their agreement

DP2.0 is video data exchange agreement, shall be formulated by the video electronics standards association VESA and standardization, and HDMI2.1 close to (details to see: the difference between DP2.0 and HDMI2.1), features, data encoding has irreplaceable position in multimedia high-resolution imaging.

        USB4和雷电4是一种传输标准，两者都是在雷电3基础上开发，包含有PCIExpress数据传输技术和DisplayPort显示技术也就是说雷电4和USB4协议比DP2.0协议功能更全面，不仅能支持音视频信号传输，还有文件上传下载能力和供电能力。

Because DP2.0 lightning were used as a physical interface, USB4 and thunder was also on the basis of lightning 3 development, theory of transmission bandwidth is 40 GBPS, actually otherwise, is individual agreement, DP2.0 don't need data upward, so the merger two-way channel for one-way, transmission bandwidth of up to 80 GBPS. Standard contrast is as follows:

DP2.0 agreement: bandwidth 80 GBPS, support the 16 k @ 60 hz (15360 * 8460), 8 k @ 120 hz (7680 * 4320) and 4 k @ 144 hz (3840 * 2160) resolution, support 3 d imaging and dynamic HDR 144 hz;

USB4 and lightning 4 protocol: 40 GBPS bandwidth, support 8 k (7680 * 4320) resolution, support 32 gb/s PCIe channel bandwidth; Two versions of USB4 divided into Gen2 Gen3, USB4 Gen2 support 20 GBPS bandwidth and 16 gb/s PCIe channel bandwidth, USB4 Gen3 for 40 GBPS bandwidth and 32 gb/s PCIe channel bandwidth, USB4 Gen3 as lightning 4 compatible with each other.

From the point of application scenarios

DP2.0 in imaging showed stronger, 80 GBPS bandwidth and 16 k resolution laid the foundation for high-definition video animation, in the field of games, AR/VR can have bright eyes.

Lightning 4 function more comprehensive, can not only satisfy video transmission function, also have the ability to data transmission and power supply and can be compatible with various interfaces, such as PC intelligent mobile terminal.

USB4 relatively stronger commonality, USB4 is USB - IF A comprehensive upgrade of USB2.0/3.0/3.1, for the present stage of USB Type on the market - A and USB Type - C compatibility is better, the future USB4 became popular, people don't have to worry about data interface is wrong, need A C or C A trouble.

That is this issue about DP2.0 and USB4 lightning 4 interface protocols contrast details, more related to science, focus on Keith shield website news welcome advice column!