DisplayPort has several advantages over VGA, DVI, and LVDS.[31]
Open standard available to all VESA members free of charge and to non-members for a fee,[32] royalty-free and extensible standard to help broad adoption
Fewer lanes with embedded self-clock, reduced EMI with data scrambling and spread spectrum mode
Based on a micro-packet protocol
Allows easy expansion of the standard with multiple data types
Flexible allocation of available bandwidth between audio and video
Multiple video streams over single physical connection (version 1.2)
Long-distance transmission over alternative physical media such as optical fiber (version 1.1a)
High resolution displays and multiple displays with a single cable
17.28 Gbit/s of effective video bandwidth, enough for four simultaneous 1080p60 displays (CEA-861 timings) or 2,560 × 1,600 × 30 bit @120 Hz (CVT-R timings)[note 1]
Designed to work for internal chip-to-chip communication
Aimed at replacing internal LVDS links to display panels with a unified link interface
Compatible with low-voltage signaling used with sub-nanometer CMOS fabrication
Can drive display panels directly, eliminating scaling and control circuits and allowing for cheaper and slimmer displays
Link training with adjustable amplitude and preemphasis adapts to differing cable lengths and signal quality
Reduced bandwidth transmission for 15 meter cable (at least 1920×1080p60, 24 bpp)
Full bandwidth transmission for 2 meter cable
High-speed auxiliary channel for DDC, EDID, MCCS, DPMS, HDCP, adapter identification etc. traffic
Can be used for transmitting bi-directional USB, touch-panel data, CEC, etc.
Self-latching connector
[edit]Comparison with HDMI
Although DisplayPort has much of the same functionality as HDMI, it is expected to complement the interface, not replace it.[3][4] DisplayPort can emit an HDMI signal through the use of a passive adapter connected to a port that is designed for dual-mode.
The DisplayPort specification defines the standard as royalty-free, while HDMI charges US$0.04 per device with an annual fee of $10,000 for high volume manufacturers.[33] HDMI Licensing counters the "royalty-free" claim by pointing out that the DisplayPort specification leaves open the possibility of charging for implementation.[34] DisplayPort has more than twice the bandwidth at 21.6 Gbit/s[35] (17.28 Gbit/s with overhead removed) as opposed to HDMI's 10.2 Gbit/s[36] (8.16 Gbit/s with overhead removed). It also has the ability to share this bandwidth with multiple streams of audio and video to separate devices.[37]
DisplayPort in native mode lacks some HDMI features such as xvYCC color space capability (added in DisplayPort version 1.2) and Consumer Electronics Control (CEC) commands, which allow the control of multiple devices through a single remote;[38][39] VESA asserts that CEC commands can be transmitted over the AUX channel if needed.[37] HDMI uses unique Vendor Specific Block structure which allows for features such as additional color spaces. However, these features can be defined by CEA EDID extensions.
