DisplayPort · 2010
DisplayPort 1.2
4K at 60 Hz since 2010, plus daisy-chaining (MST).
- data: 21.6 Gbps
- video: 4K 60 Hz / 1440p 144 Hz
Spec card
- Max link rate
- 21.6 Gbit/s (4 lanes × 5.4, HBR2)
- Usable video
- 17.28 Gbit/s after 8b/10b
- Max video
- 4K 60 Hz 8-bit; 1440p 144 Hz 8-bit
- Multi-stream (MST)
- daisy-chain or split to several monitors
- Adaptive sync
- FreeSync / G-Sync Compatible from 1.2a
- Cable
- any standard DisplayPort cable
Also sold as DP 1.2DP 1.2aHBR2
The cable you need
Any decent DisplayPort cable up to about 3 m.
Watch out for
- macOS does not do MST daisy-chaining on its own ports.
DisplayPort 1.2 sends packets over four lanes at 5.4 Gbps each (HBR2). With 8b/10b coding that leaves 17.28 Gbps, enough for 4K at 60 Hz (12.54 Gbps with reduced blanking) with room to spare, and for 1440p at 144 Hz.
It also introduced Multi-Stream Transport (MST), which lets one port drive several monitors by daisy-chaining or through an MST hub. The monitors share the 17.28 Gbps. Macs do not support MST on their own ports, so they show the same image on chained screens or nothing at all.
What it can carry
Computed from each link's usable bandwidth; 4K at 60 Hz and above assumes 10-bit HDR colour. How.
| Mode | DP 1.2 |
|---|---|
| 1080p 60 Hz 8-bit | Fits 3.2 Gbps |
| 1080p 144 Hz 8-bit | Fits 8.0 Gbps |
| 1440p 144 Hz 8-bit | Fits 14.1 Gbps |
| 4K 30 Hz 8-bit | Fits 6.2 Gbps |
| 4K 60 Hz 10-bit | Fits 15.7 Gbps |
| 4K 120 Hz 10-bit | Too much 32.3 Gbps |
| 4K 144 Hz 10-bit | Too much 39.2 Gbps |
| 4K 240 Hz 10-bit | Too much 68.6 Gbps |
| 8K 60 Hz 10-bit | Too much 62.1 Gbps |