HDMI 2.0 vs HDMI 2.1: Which Cable Should You Choose?

2/4/2026 · Cables · 6 min

TL;DR

• HDMI 2.0 supports up to 4K at 60Hz.
• HDMI 2.1 supports up to 8K at 60Hz and 4K at 120Hz.

What is HDMI?

HDMI (High-Definition Multimedia Interface) is a standard for transmitting high-definition video and audio from a source to a display.

Key Differences

• Bandwidth:
• HDMI 2.0: 18 Gbps
• HDMI 2.1: 48 Gbps
• Resolution and Refresh Rate:
• HDMI 2.0: 4K at 60Hz
• HDMI 2.1: 8K at 60Hz and 4K at 120Hz
• Dynamic HDR Support:
• HDMI 2.0: No
• HDMI 2.1: Yes
• eARC (Enhanced Audio Return Channel):
• HDMI 2.0: Limited audio formats
• HDMI 2.1: Supports advanced audio formats like Dolby Atmos

Compatibility

• Backward Compatibility:
• HDMI 2.1 is backward compatible with HDMI 2.0 devices, but you won’t get the advanced features unless both devices support HDMI 2.1.
• Cables:
• Not all HDMI cables are created equal. To fully utilize HDMI 2.1 features, you need Ultra High Speed HDMI cables.

Future-Proofing Your Setup

• Gaming: If you're a gamer, HDMI 2.1 is essential for next-gen consoles like the PlayStation 5 and Xbox Series X, which can take full advantage of higher refresh rates and resolutions.
• Home Theater: For a premium home theater experience, HDMI 2.1 ensures you are ready for the latest formats and features.

Conclusion

If you're investing in a new display or gaming console, opt for HDMI 2.1 to future-proof your setup. HDMI 2.0 is still viable for most current applications, but HDMI 2.1 offers enhanced performance and capabilities.

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