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Both HDMI and DisplayPort have published specification for transmitting their signal over the USB-C connector. For more details, see USB-C §Alternate Mode partner specifications. High-resolution displays and multiple displays with a single connection, via a hub or daisy-chaining [68] The reason that bandwidth becomes important is due to the advent of 4K content. Due to the limited bandwidth of HDMI 1.4, only 24fps was possible at 4K resolution (3,840 x 2,160). Now, thanks to the extra bandwidth available in the 2.0spec, up to 60fps at 4K resolution is possible. This also allows you to view 144Hz at 1080p (1,920 x 1,080) through a HDMI 2.0 connection.
READ NEXT: What’s the difference between WQHD, QHD, 2K, 4K and UHD? DisplayPort: 4K at 144Hz with audio and video capabilitiesMake sure you're buying your DisplayPort 1.4 cables from a reputed source like Cable Matters. Most of the DisplayPort cables that Cable Matters offers are VESA Certified which means they've passed the Video Electronics Standards Association's rigorous testing requirements. There, you'll find plenty of choices, whether you want shorter, passive DisplayPort cables, or longer, active alternatives which can stretch up to 24 feet. Take a look at some of Cable Matters' cable offerings. What about DisplayPort 1.4a? VESA also tell us that “there are other, more subtle updates (e.g., data structure clarification/addition, metadata definition extension) with each new standard version that improve the interoperability as well as the visual quality even at lower than the maximum link rate. That is why there is an obvious merit for a product to be certified to the latest version of DisplayPort standard, irrespective of its maximum link rate.”
This article will take you through the latest generation of DP that you will soon start to hear more about, and that is now, as of 17 October 2022, DisplayPort 2.1. We will refer to this as “DP 2.1” throughout now that this updated version has been announced. The initial DP 2.0 standard for which this article was originally written was published in June 2019, although actual consumer DP 2.0 devices in the monitor and display space have yet to appear. DP 2.1 supersedes the 2.0 generation. The standard “defines the new normative requirement and informative guideline for component and system design” as VESA put it. The new DisplayPort capabilities included in DisplayPort 2.0 / 2.1 have begun the cycle of hardware development that will result in such technology becoming available to consumers in a range of products over the next few years. More discussion on timescales later on. With the updates to DP 2.1 made on 17 Oct 2022 VESA have also updated the DisplayPort cable specification to provide greater robustness and enhancements to full-size and Mini DisplayPort cable configurations that enable improved connectivity and longer cable lengths (beyond two meters for DP40 cables and beyond one meter for DP80 cables) without diminishing UHBR performance. What if your cable isn’t good enough and isn’t DP40 or DP80 certified?
Typical Apple Innovation…
A newer 1.3 and 1.4 version, that both have a maximum data rate of 25.92 Gbits/sec, are both becoming more widely available. With the increased bandwidth capabilities, it opens up the floodgates to higher resolutions such as 7,680 x 4,320 (8K).
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