Side-by-Side Comparison
Display Cables
DisplayPort 1.4 vs. DisplayPort 2.1
Comparing 2 standards across 7 specifications. 7 key differences identified.
Comparing:
DisplayPort 1.4
DisplayPort 2.1
DisplayPort 1.4, released March 2016, kept the same 32.4 Gbps HBR3 link rate as 1.3 but added Display Stream Compression (DSC) 1.2 -- a visually lossless compression scheme that extends the same bandwidth to resolutions like 8K at 30Hz that wouldn't otherwise fit.
DisplayPort 2.1, announced October 2022, is a certification-level refinement of the DisplayPort 2.0 specification VESA released back in June 2019. Its fastest UHBR20 mode delivers 80 Gbps raw bandwidth -- enough for a single 10K display at 60Hz uncompressed, or multiple high-refresh 4K/8K displays daisy-chained with compression.
Specification Comparison Table
7 Parameters| Parameter / Spec | ||
|---|---|---|
|
Max Resolution @ Refresh Rate
|
8K @ 60Hz (with DSC) / 4K @ 120Hz / 1440p @ 240Hz | 16K @ 60Hz (DSC) / 8K @ 120Hz / 4K @ 240Hz |
|
Max Bandwidth / Data Rate
|
32.4 Gbps (HBR3, 25.92 Gbps payload) | 80.0 Gbps (UHBR20, 77.37 Gbps payload) |
|
Pin Count
|
20 Pins (Full size DP) / USB-C Alt-Mode | 20 Pins (DP) / USB-C (DP40 / DP80 certified) |
|
Display Stream Compression (DSC)
|
DSC 1.2 Supported | DSC 1.2a Mandatory Support |
|
Variable Refresh Rate (VRR)
|
VESA Adaptive-Sync / G-Sync / FreeSync Native | VESA Adaptive-Sync & Panel Replay |
|
Max Audio Channels
|
32 Channels (1,536 kHz total sample rate) | 32 Channels |
|
Max Recommended Cable Length
|
2–3 Meters (Passive HBR3) | 1–2 Meters (Passive DP80) / 3m (DP40) |
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