HDMI 2.1 Explained: Do You Really Need It?
HDMI 2.1 enables 4K 120Hz gaming and more. But do you actually need it? We break down the features and who benefits most.
What is HDMI 2.1?
HDMI 2.1 is the latest HDMI specification, supporting higher bandwidth (48Gbps vs 18Gbps for HDMI 2.0). This enables new features like 4K at 120Hz, 8K at 60Hz, and Variable Refresh Rate (VRR).
It's become the standard for next-gen gaming, but not everyone needs it.
Key HDMI 2.1 Features
Here are the main features HDMI 2.1 enables:
- •4K @ 120Hz: Smooth, high-frame-rate gaming at 4K resolution
- •VRR (Variable Refresh Rate): Eliminates screen tearing without input lag
- •ALLM (Auto Low Latency Mode): Automatically switches to game mode
- •eARC (Enhanced Audio Return Channel): High-quality audio passthrough
- •8K @ 60Hz: Future-proofing for 8K content (not yet widely available)
Who Needs HDMI 2.1?
PS5 and Xbox Series X owners benefit most—these consoles support 4K 120Hz gaming on compatible titles.
PC gamers with high-end graphics cards (RTX 4080/4090 or equivalent) can also take advantage of 4K 120Hz.
Who Doesn't Need HDMI 2.1?
If you primarily watch streaming content (Netflix, Disney+, etc.), HDMI 2.0 is plenty—streaming maxes out at 4K 60Hz.
Nintendo Switch owners also don't need HDMI 2.1, as the console outputs at 1080p/720p maximum.
HDMI 2.1 Buying Tips
Check how many HDMI 2.1 ports the TV has—some TVs only have one or two full-bandwidth ports.
Not all "HDMI 2.1" ports are equal. Verify the specific features supported (4K 120Hz, VRR, etc.) as manufacturers can be misleading.
Check how many HDMI 2.1 ports the TV has—some TVs only have one or two full-bandwidth ports.
Not all "HDMI 2.1" ports are equal. Verify the specific features supported (4K 120Hz, VRR, etc.) as manufacturers can be misleading.