VESA, which is responsible for video standards, has updated the DisplayPort specifications. The small update from DisplayPort 2.1 to DisplayPort 2.1a affects passive cables: instead of DP40 cables with a maximum length of 1 meter, there are now DP54 cables with a length of up to 2 meters.
DP54 cables replace DP40 cables
The official statement said that the new DP54 specification replaces the previous DP40 specification for DisplayPort cables. Previously, only DP80 cables up to 2 meters in length were allowed.
The numbers represent the maximum transfer rate: DP40 means 40 Gbit/s in UHBR10 mode, DP54 means 54 Gbit/s in UHBR13.5 mode and DP80 means a maximum speed of 80 Gbit/s in UHBR20 mode, like an upcoming monitor from Gigabyte, but it doesn't You don't have a graphics card yet.
AMD's RX-7000 graphics cards offer a maximum of UHBR13.5 at 54Gb/s, so the DP54 cable specification is sufficient for them, which now allows for twice the cable length. Cables previously specified as DP40 are now automatically certified as DP54 because they meet internal VESA testing requirements. Investing in a future-proof DP80 cable when purchasing a new cable is certainly not a bad idea.
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In addition, the Automotive Extension for DisplayPort was introduced at the same time, which enables integrity testing of automotive displays.
However, until now there is no standardized way to verify that data sent by the GPU has been received by the display in the same way as it was sent, to ensure that it is free of noise injection or errors.
VESA's new Automotive Extension Specification protocol meets this need and adds important security protocols on top of the existing DisplayPort 2.1a and eDP 1.5a specifications.
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