Does DisplayPort Support 240Hz?
DisplayPort supports 240Hz in many scenarios, but the supported resolution depends on the exact DP version.
Updated February 14, 2026
At a Glance
Start here if you only need the short answer.
- 1Yes. DisplayPort supports 240Hz.
- 2The maximum resolution at 240Hz depends on whether you have DP 1.2, DP 1.4, or DP 2.1.
- 3For 4K 240Hz, DP 2.1 or DSC-enabled paths are usually required.
DisplayPort 240Hz Support Matrix
Each target below shows whether this setup can deliver it reliably.
| Target | Result | Notes |
|---|---|---|
| 1080p 240Hz | Yes | Common on DP 1.2 and newer |
| 1440p 240Hz | Yes | Common on DP 1.4-class setups |
| 4K 240Hz | Sometimes | Needs DP 2.1 or DSC-enabled link |
| Adaptive sync at 240Hz | Yes | Depends on monitor/GPU support |
Why DP Version Matters at 240Hz
240Hz multiplies data rate quickly as resolution rises. DisplayPort version determines how much payload you can carry.
1080p 240Hz
Moderate bandwidth demand
1440p 240Hz
High bandwidth demand
4K 240Hz
Extreme bandwidth demand
DSC assistance
Often required at top-end modes
DP 1.4 is excellent for 1080p/1440p 240Hz and can push higher with DSC.
For consistent 4K 240Hz ambitions, plan around DP 2.1-class hardware.
Common 240Hz Setup Problems
If something is not working, these are the highest-impact checks.
- 1
Monitor overclock mode not enabled
Some displays require enabling high refresh mode in OSD before 240Hz appears.
- Enable overclock/high refresh in monitor menu
- Power-cycle after changing OSD refresh settings
- 2
Cable quality bottleneck
Unreliable cables can cause black screens or reduced refresh options.
- Use a certified DP cable matched to your target mode
- Keep cable runs short for troubleshooting
- 3
GPU output port mismatch
Not every output on a GPU may expose the same DP level in practice.
- Try another DP output on the GPU
- Update GPU firmware/driver
- 4
Windows/GPU panel still set to lower refresh
Refresh defaults can stick at 60Hz/120Hz.
- Set 240Hz manually in OS and driver panel
- Recreate custom resolution if EDID negotiation is unstable
DisplayPort Generations for 240Hz
Use this side-by-side view when deciding between the two options.
| Feature | DP 1.2/1.4 | DP 2.1 |
|---|---|---|
| 1080p 240Hz | Yes | Yes |
| 1440p 240Hz | Yes | Yes |
| 4K 240Hz | Limited / DSC dependent | Much stronger support |
| Future headroom | Moderate | High |
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...
- 1080p or 1440p esports displays at 240Hz
- Single monitor setups with DP 1.4 hardware
- Users comfortable with DSC for higher modes
Consider Another Option If...
- Native 4K 240Hz without compromises
- Maximum long-term bandwidth headroom
- Complex multi-display high-refresh setups
Common Questions
Fast answers to the questions people ask most before buying.
Can DisplayPort 1.4 run 240Hz at 1440p?
Yes, DP 1.4 commonly supports 1440p 240Hz on compatible monitor and GPU combinations.
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.
Do I need DP 2.1 for 240Hz?
Not for 1080p/1440p in most cases. DP 2.1 matters more when pushing very high resolutions like 4K 240Hz.