DisplayPort - The Workstation Video Standard

Royalty-free, packet-based video with the highest bandwidth in the industry. DP 2.1 reaches 80 Gbps and 16K resolution.

DisplayPort (DP) is the digital video standard developed by VESA in 2006 as a royalty-free alternative to HDMI for the PC and workstation segment. Unlike HDMI's pixel-clock model, DisplayPort uses packetised micro-packet streams - which is why it scales much more flexibly across resolutions and refresh rates. The connector has 20 pins with a positive latch (the small button on the back) that holds the cable firmly in place.

DisplayPort 2.1 (2022) supports 80 Gbit/s raw bandwidth - enough for 16K at 60 Hz or 4K at 240 Hz. With MST (Multi-Stream Transport) one cable can drive multiple monitors via daisy-chain or hub. Most modern workstation GPUs ship with three or four DP outputs in addition to one HDMI.

Technical Specifications

Standard	VESA DisplayPort 2.1
Pins	20
Latch	Yes (positive locking)
Bandwidth DP 1.4	32.4 Gbit/s
Bandwidth DP 2.1	80 Gbit/s
Max resolution DP 1.4	8K @ 60 Hz (DSC)
Max resolution DP 2.1	16K @ 60 Hz / 4K @ 240 Hz
MST	Up to 4 monitors per cable

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Frequently Asked Questions

DisplayPort vs HDMI for gaming?

For 4K / 120 Hz both work. For 4K / 240 Hz or 8K, DisplayPort 2.1 is required. Adaptive sync (G-Sync, FreeSync) was historically DP-first but is now also on HDMI 2.1 as VRR.

Is DP-Alt mode the same as a DisplayPort cable?

Electrically yes - DP-Alt mode tunnels DisplayPort signals through a USB-C connector. Image quality and bandwidth are identical. Mechanically it lets a single USB-C cable carry video, USB and PD.

Can I daisy-chain monitors with MST?

Yes, if both monitors and GPU support DP 1.2 MST. Connect GPU -> Monitor 1 (DP-out) -> Monitor 2. Total bandwidth is shared between the chained displays.

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