AMD Navi 31 GPU might actually support DisplayPort 2.1

The GeForce RTX 40 series’ lack of compatibility for DisplayPort 2.0 surprised everyone. This standard was formally launched in 2019, although GeForce RTX 30 and Radeon RX 6000 series did not include it, most likely because it came too late. But as of three years ago, DisplayPort 2.0 is only supported by Intel discrete Arc GPUs.

The AMD Navi 31 GPU may be the first to enable DisplayPort 2.1, based on Kyle Bennett’s sources. Although you may already obtain “approved” cables for this standard, VESA (the organisation that standardises the display interface) has not confirmed this standard.

Unknown DisplayPort 2.1 specifications suggest that UHBR 20 (20 Gbit per lane) functionality would be a standard feature.

The most advanced DP 2.0 implementation currently available supports 4 lanes with up to 80 Gbit/s of bandwidth. It allows arrangements like one 16K monitor at 60 Hz, two 4K displays at 144 Hz, or three 4K displays at 90 Hz.

Extension with DSC 1.2a, DP 1.4a is supported by NVIDIA RTX 40 GPUs (Display Stream Compression). Up to 8K @ 60 Hz or 4K @ 120 Hz (with 30bit/px colour and HDR) are supported by the DP 1.4a standard, but this necessitates DSC with HBR3 transmission speeds.

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