HDMI 2.0 or 2.1? Key Differences
HDMI 2.1 offers higher bandwidth, supporting 4K at 120Hz and 8K, plus advanced gaming features like VRR and ALLM. HDMI 2.0 is sufficient for standard 4K streaming and older consoles. Our comparison helps you match the cable to your devices.
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HDMI 2.1 Cable
Future-proof with 48Gbps bandwidth, supports 4K at 120Hz, 8K at 60Hz, eARC, VRR, ALLM. Ideal for PS5, Xbox Series X, and high-end PCs.
Check priceHDMI 2.0 Cable
18Gbps bandwidth, supports 4K at 60Hz, HDR, and basic audio return. Perfect for streaming devices, older consoles, and non-gaming setups.
Check priceChoose HDMI 2.1 if you own a PS5, Xbox Series X, or plan to game at 4K 120Hz or 8K. For standard 4K streaming and older devices, HDMI 2.0 is more than enough and costs less.
Spec by spec
Highlighted cell wins that row.
| HDMI 2.1 Cable | HDMI 2.0 Cable | |
|---|---|---|
| Maximum Bandwidth | 48 Gbps | 18 Gbps |
| 4K Resolution Support | Up to 4K at 120Hz | Up to 4K at 60Hz |
| 8K Resolution Support | 8K at 60Hz | Not supported |
| eARC (Enhanced Audio Return Channel) | Yes | ARC only (no eARC) |
| Variable Refresh Rate (VRR) | Yes | No |
| Auto Low Latency Mode (ALLM) | Yes | No |
| Typical Price | Higher | Lower |
Who should buy which
- + You own or plan to buy a PS5, Xbox Series X, or high-end gaming PC.
- + You want to game at 4K 120Hz or explore 8K content.
- + You need eARC for high-quality audio from your TV to a soundbar.
- + You want VRR and ALLM for smoother, lower-lag gaming.
- + You primarily stream 4K content on Netflix, Disney+, or similar services.
- + You use an older console like PS4 Pro or Xbox One X.
- + You don't need high refresh rates or advanced gaming features.
- + You are on a budget and want a reliable cable for everyday use.
Quick questions
Can I use an HDMI 2.1 cable with a device that only supports HDMI 2.0?
Yes, HDMI 2.1 cables are backward compatible with HDMI 2.0 devices. They will work at the lower bandwidth and feature set of the device. However, you won't gain any 2.1 benefits unless both the source and display support 2.1.
Do I need HDMI 2.1 for 4K streaming?
No. HDMI 2.0 is fully capable of 4K streaming at 60Hz with HDR. Most streaming services and content are limited to 4K at 60Hz, so HDMI 2.0 is sufficient. HDMI 2.1 is only necessary if you want 4K at 120Hz or 8K.
Are all HDMI 2.1 cables the same?
Not exactly. While the specification is standard, build quality can vary. Look for certified Ultra High Speed HDMI cables that meet the 48Gbps bandwidth requirement. Some cheaper cables may not perform reliably at longer lengths.