DisplayPort vs HDMI for 4K 144Hz
For 4K 144Hz, both can work, but the best choice depends on exact version support and DSC.
Updated February 14, 2026
At a Glance
Start here if you only need the short answer.
- 1Both DisplayPort and HDMI can run 4K 144Hz on modern hardware.
- 2DisplayPort 1.4 usually needs DSC, while HDMI 2.1 can do 4K 144Hz natively on supported paths.
- 3Pick the port your monitor and GPU implement best.
4K 144Hz by Interface
Each target below shows whether this setup can deliver it reliably.
| Target | Result | Notes |
|---|---|---|
| DisplayPort 1.2 | No | Not enough for 4K 144Hz |
| DisplayPort 1.4 | Yes | Usually with DSC |
| HDMI 2.0 | No | Capped around 4K 60Hz |
| HDMI 2.1 | Yes | Built for high-refresh 4K |
Bandwidth Reality: DP 1.4 vs HDMI 2.1
DisplayPort 1.4 and HDMI 2.1 approach 4K 144Hz differently. DP 1.4 relies heavily on DSC in many real setups.
DisplayPort 1.4 raw
32.4 Gbps
DisplayPort 1.4 effective payload
25.92 Gbps
HDMI 2.1 raw
48 Gbps
4K 144Hz target
~32+ Gbps uncompressed
If your monitor/GPU supports DSC well, DisplayPort 1.4 is excellent for 4K 144Hz.
If you want broader headroom and modern console support, HDMI 2.1 is often the simpler path.
Why 4K 144Hz Fails Even with New Ports
If something is not working, these are the highest-impact checks.
- 1
DSC disabled or unsupported
Some monitors require DSC toggles or firmware support to unlock top refresh modes.
- Enable DSC in monitor OSD if available
- Update GPU drivers and monitor firmware
- 2
Incorrect port selection
Not all monitor inputs have equal capabilities.
- Use the HDMI 2.1 or DP 1.4-labeled port
- Avoid older secondary ports when testing max refresh
- 3
Color depth or chroma setting too heavy
10-bit + full chroma can force lower refresh depending on link budget.
- Test 8-bit RGB first
- Then incrementally increase color settings
- 4
Adapter chain limits bandwidth
Converters and KVMs often negotiate lower bandwidth modes.
- Test with a direct cable path
- Verify every intermediate device supports target mode
DisplayPort 1.4 vs HDMI 2.1
Use this side-by-side view when deciding between the two options.
| Feature | DisplayPort 1.4 | HDMI 2.1 |
|---|---|---|
| 4K 144Hz support | Yes (often with DSC) | Yes |
| Console compatibility | Limited | Strong |
| PC monitor ecosystem | Very strong | Strong |
| Bandwidth headroom | Moderate | Higher |
Decision Guide
Use this quick split to decide if this setup is enough or if you should move to a stronger option.
Great Fit If...
- PC gaming monitor with DP 1.4 + DSC
- GPU and monitor both verified for 4K 144Hz over DP
- Single-monitor high-refresh desktop setups
Consider Another Option If...
- Mixed PC + console setup where HDMI 2.1 is preferred
- Monitors that only expose full refresh over HDMI 2.1
- Setups requiring maximum compatibility with TVs
Common Questions
Fast answers to the questions people ask most before buying.
Is DisplayPort always better than HDMI for PC gaming?
Not always. It depends on the versions and monitor implementation. For 4K 144Hz, DP 1.4 with DSC and HDMI 2.1 can both be excellent.
Why is my 144Hz monitor stuck at 60Hz?
Most 60Hz locks come from using the wrong port/cable combination, limited monitor OSD settings, or refresh rate settings left at 60Hz in the OS/GPU panel.
Should I use HDMI 2.1 for a 4K 144Hz monitor?
If both your GPU and monitor have full HDMI 2.1 support, it is often the simplest high-bandwidth choice.