VESA at CES Showcases Longer UHBR Cables, DisplayPort 2.1a, eDP 1.5a, and Adaptive Sync

[btarunr]

VESA, the organization behind consumer display standards, showcased some recent technological advancements at the 2024 International CES. To begin with, VESA unveiled the new DisplayPort 2.1a specification, which, among other things, enables longer UHBR10 and UHBR13.5 capable cables. The current DP 2.1 is limited by cable length to meet the ability to stream 8K2K 240 Hz, or 8K4K 120 Hz over 4 length. This comes in the form of the new DP54 cable standard. While VESA is retiring DP40, the cables that have been already shipped have been tested and re-certified by VESA as DP54.

While DP80 UHBR cables continues to be supported, the current UHBR13.5 link could only be serviced using DP80 cables. Now, instead of being restricted in length by a DP80 cable, users can opt for a DP54 cable, that can be twice the length of DP80 to enable UHBR13.5.

At the VESA booth, we were also given Adaptive Sync dual-mode gameplay demos at 240 Hz and 480 Hz; a set of gaming notebooks that implement Adaptive Sync displays, including a GIGABYTE AERO 16 notebook that implements DisplayHDR 1000; some notebooks that demonstrate the ClearMR technology; the new Dell AW252HF Adaptive Sync display that's certified for Full HD at 480 Hz; a new VIA Labs chipset that tunnels DisplayPort over USB4; and reference designs for DisplayPort 2.1 docking stations. Many of these technologies are already being implemented, and we should expect to see DisplayPort 2.1a implemtation over the course of 2024.



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[Assimilator]

a new VIA Labs chipset that tunnels DisplayPort over USB4

I'm looking forward to seeing products using this in 2034...

 

[las]

2.1a is the final spec it seems

Looks like 1.4a can do 240 Hz at 4K/UHD with DSC, most of the new monitors have at CES still use 1.4

Does anyone know if 480 Hz is possible with DP 1.4a at 1440p?

 

[Assimilator]

Does anyone know if 480 Hz is possible with DP 1.4a at 1440p?

https://linustechtips.com/topic/729232-guide-to-display-cables-adapters-v2/?section=calc&H=2560&V=1440&F=480&calculations=show&formulas=show

That's over 56 Gbit/s uncompressed while 1.3 through 1.4a offer slightly less than 26 Gbit/s, so the answer will entirely depend on the bits/channel and colour spec of the monitor, and how well DSC can compress the datastream. Assuming 10 bpc and RGB with best-case 3:1 compression, which requires slightly more than 23 Gbits/s, then DP 1.3+ will easily support that resolution at that refresh rate.

 

[Chomiq]

2.1a is the final spec it seems

Looks like 1.4a can do 240 Hz at 4K/UHD with DSC, most of the new monitors have at CES still use 1.4

Does anyone know if 480 Hz is possible with DP 1.4a at 1440p?

https://www.techpowerup.com/forums/threads/general-nonsense.232862/post-5175135