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Since the first version of DisplayPort was approved by VESA in 2006, each subsequent iteration has improved resolution and bandwidth. For example, when the current standard—DisplayPort 1.3 (DP 1.3)—was released in 2014, it increased the maximum link bandwidth by 50% over the previous standard to 32.4 Gbps. In 2014, VESA also introduced HBR3 (High Bit Rate 3), a transmission mode for DisplayPort that made this boost possible. With HBR3, DP 1.3 can drive a 5K x 3K (5120×2880) display at 60hz, or two 4K UHD monitors each with a resolution of 3840×2160. DP 1.3 is widely available today, but in the coming months DisplayPort 1.4 will be a new high performance standard incorporated in more and more products. Before we get to the newest DisplayPort standard, let's set the record straight about DisplayPort and another popular interface: HDMI. DisplayPort vs HDMI
DisplayPort 1.4 does not support Audio Return Channel (ARC), so a separate audio cable is needed for audio transmission. If you have older devices, it will also work with older versions of DisplayPorts, like DisplayPort 1.2 and display port 1.3. It will not disappoint you in terms of performance. In DisplayPort versions 1.0–1.4a, the data is encoded using ANSI 8b/10b encoding prior to transmission. With this scheme, only 8 out of every 10 transmitted bits represent data; the extra bits are used for DC balancing (ensuring a roughly equal number of 1s and 0s). As a result, the rate at which data can be transmitted is only 80% of the physical bitrate. The transmission speeds are also sometimes expressed in terms of the "Link Symbol Rate", which is the rate at which these 8b/10b-encoded symbols are transmitted (i.e. the rate at which groups of 10 bits are transmitted, 8 of which represent data). The following transmission modes are defined in version 1.0–1.4a: AMD gamers have a few more options, at least with RX 7000-series cards. You can find DisplayPort 2.1 monitors and TVs, if you look hard enough. Maybe. The Asus ROG Swift PG32UXQR for example supports DisplayPort 2.1, but it hasn't officially released yet (and it's not the same as the previous PG32UXQ). HDMI 2.1 connectivity is also sufficient, and there are more displays available. Keep in mind that maximum bandwidth of the RDNA 3 GPUs is 54 Gbps over DisplayPort 2.1, or 48 Gbps over HDMI 2.1, so it's not a huge difference. Most AMD RX 7900-series cards that we've seen include two DisplayPort 2.1 ports, and either two HDMI 2.1 or a single HDMI 2.1 alongside a USB Type-C connection. Cables with limited transmission speed are still compatible with all DisplayPort devices, but may place limits on the maximum resolution or refresh rate available.DisplayPort 1.4 is capable of supporting this HDR or High-dynamic-range video functionality. So you’ll get better picture quality while performing games, streaming, or other works. Pin 20 on the DisplayPort connector, called DP_PWR, provides 3.3 V (±10%) DC power at up to 500 mA (minimum power delivery of 1.5 W). [8] :§3.2 This power is available from all DisplayPort receptacles, on both source and display devices. DP_PWR is intended to provide power for adapters, amplified cables, and similar devices, so that a separate power cable is not necessary. Two 8K ( 7680 × 4320) displays @ 120 Hz and 10 bpc (30 bit/px, HDR) RGB/Y′C BC R 4:4:4 color (with DSC) HDMI 2.1 introduced dynamic HDR support, allowing for dynamic adjustments in HDR settings scene by scene. On the other hand, DisplayPort 1.4 supports static HDR, which provides a fixed HDR setting throughout the content. Number of Displays supported HDMI 2.1 offers eARC (enhanced Audio Return Channel), which enables the transmission of high-quality audio formats such as Dolby Atmos and DTS:X over HDMI.
HBR2 (High Bit Rate 2): 5.40 Gbit/s bandwidth per lane (540 MHz link symbol rate), introduced in DP 1.2 HDR extensions were defined in version 1.4 of the DisplayPort standard. Some displays support these HDR extensions, but may only implement HBR2 transmission mode if the extra bandwidth of HBR3 is unnecessary (for example, on 4K 60 Hz HDR displays). Since there is no definition of what constitutes a "DisplayPort 1.4" device, some manufacturers may choose to label these as "DP 1.2" devices despite their support for DP 1.4 HDR extensions. [52] As a result, DisplayPort "version numbers" should not be used as an indicator of HDR support. DisplayPort 1.4 is currently themost sought-after DisplayPort technology. But you may be asking yourself, is DisplayPort 1.4 worth it? Do I need DisplayPort 1.4? DisplayPort 1.2 offers a maximum total bandwidth of 21.6 Gbps over its four lanes and a maximum total data rate of 17.28 Gbps. In comparison, DisplayPort 1.4 has the same four-lane structure but expands the maximum total bandwidth to 32.40 Gbps, and the maximum total data rate to 25.92 Gbps.The Nintendo Switch also supports HDMI but is limited to HDMI 2.0. Therefore, the benefits of using an HDMI 2.1 cable won’t be significant. However, Ultra High-Speed rated HDMI 2.1 cables are built to a higher standard than older ones, ensuring superior signal quality when playing the Switch on a connected TV or display.
HDMI 1.4 supported 4K resolution at 30 FPS, while HDMI 2.0 raised the bar to 4K at 60 Hz or 8K at 30 Hz. The latest HDMI 2.1 standard takes it even further, enabling 4K resolution at 120 Hz and 8K resolution at 60 Hz. Impressively, HDMI 2.1 can even support resolutions as high as 10K. The standard in the past has been 24-bit color, or 8 bits each for the red, green and blue color components. HDR and high color depth displays have bumped that to 10-bit color, with 12-bit and 16-bit options as well, though the latter two are mostly in the professional space. Generally speaking, display signals use either 24 bits per pixel (bpp) or 30 bpp, with the best HDR monitors opting for 30 bpp. Multiply the color depth by the number of pixels and the screen refresh rate and you get the minimum required bandwidth. We say 'minimum' because there are a bunch of other factors as well.Three 4K ( 3840 × 2160) displays @ 144 Hz and 10 bpc (30 bit/px, HDR) RGB/Y′C BC R 4:4:4 color (with DSC) DisplayPort Dual-Mode ( DP++), also called Dual-Mode DisplayPort, is a standard which allows DisplayPort sources to use simple passive adapters to connect to HDMI or DVI displays. Dual-mode is an optional feature, so not all DisplayPort sources necessarily support DVI/HDMI passive adapters, though in practice nearly all devices do. Officially, the "DP++" logo should be used to indicate a DP port that supports dual-mode, but most modern devices do not use the logo. [53] HBR3 (High Bit Rate 3): 8.10 Gbit/s bandwidth per lane (810 MHz link symbol rate), introduced in DP 1.3 When using only two lanes on the USB-C connector via DP Alt Mode to allow for simultaneous SuperSpeed USB data and video, DP 2.0 can enable such configurations as: [28]
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