DisplayPort 1.2 vs. HDMI 1.4
Comparing 2 standards across 7 specifications. 7 key differences identified.
DisplayPort 1.2, released January 7, 2010, doubled maximum bandwidth to 21.6 Gbps via a new High Bit Rate 2 (HBR2) mode, enabling 4K at 60Hz for the first time. Its headline feature, Multi-Stream Transport (MST), lets multiple monitors daisy-chain from a single DisplayPort output.
HDMI 1.4, released in 2009, added the HDMI Ethernet Channel, Audio Return Channel (ARC), and stereoscopic 3D video support, plus a 4K mode -- but capped at 24-30Hz, since bandwidth stayed at 10.2 Gbps. The even smaller Type D Micro connector was also introduced.
Specification Comparison Table
7 Parameters| Parameter / Spec | ||
|---|---|---|
|
Release Date
|
January 7, 2010 | 2009 |
|
Max Bandwidth, HBR2 4 lanes (raw / effective)
|
21.6 / 17.28 Gbps | — |
|
Max Resolution @ Refresh Rate
|
3840x2160 (4K) @ 60Hz, 10-bit color | — |
|
AUX Channel Bandwidth
|
up to 720 (up from 1.0's 1 Mbps) Mbps | — |
|
Max Bandwidth / Data Rate
|
— | 10.2 (unchanged from 1.3) Gbps |
|
Max 4K Resolution
|
— | 3840x2160 @ 24, 25, or 30Hz only |
|
HDMI Ethernet Channel
|
— | 100 Mbps |