Does 4K 120Hz Monitor work with HDMI 2.1 Cable?
Quick compatibility check between 4K 120Hz Monitor and HDMI 2.1 Cable.
Confirmed compatible
HDMI 2.1 was built for exactly this bandwidth requirement.
High confidence · Updated August 2026
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4K 120Hz Monitor + HDMI 2.0 Cable →
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Works
Yes
Confidence
High
Known issues
None
Workaround
Not needed
What works & limitations
- 4K at 120Hz at full 8-bit color depth
- 4K at 120Hz with 10-bit HDR
- Variable Refresh Rate at 4K
- HDCP 2.3 content protection for 4K streaming
- Both the GPU port and monitor port must be HDMI 2.1, not just the cable itself
- HDMI 2.1 provides up to 48Gbps bandwidth, sufficient for 4K120 HDR
- RTX 3000 series and newer GPUs typically include at least one HDMI 2.1 output port
Data & storage
Offline play
No — internet required
Results are based on publicly available data and aggregated user reports.
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