If you've been reading about the PS5, Xbox Series X, or any modern TV, you've probably seen both HDMI 2.0 and HDMI 2.1 mentioned. On the surface, it seems like a minor version bump. In practice, the jump from HDMI 2.0 to HDMI 2.1 is one of the biggest leaps in the standard's history and for console gamers, it changes what's possible entirely.

The right hdmi output cord can unlock features that simply aren't accessible on older cable standards.

HDMI 2.0 What It Supports

HDMI 2.0, released in 2013, was a significant improvement over its predecessor. Key specifications include: maximum bandwidth of 18Gbps, support for 4K resolution at up to 60fps, support for HDR (High Dynamic Range) with HDR10 and Dolby Vision, and up to 32 audio channels.

For years, HDMI 2.0 was more than enough for gaming. The PS4 Pro and Xbox One X both maxed out at 4K 60fps, and HDMI 2.0 handled that comfortably.

HDMI 2.1 What Changes

HDMI 2.1, released in 2017 but adopted widely from 2020 onward, is a massive step up. Maximum bandwidth jumps to 48Gbps nearly three times what HDMI 2.0 supports. This unlocks capabilities that were simply not possible before:

4K at 120fps: The headline feature for PS5 and Xbox Series X. HDMI 2.0 cannot carry a 4K 120fps signal at full quality.

8K at 60fps: Not relevant for most gamers today, but it's supported.

Variable Refresh Rate (VRR): HDMI 2.1 includes native VRR support, which syncs the display's refresh rate to the game's frame rate. HDMI 2.0 does not natively support VRR.

Auto Low Latency Mode (ALLM): Automatically switches the display to game mode when gaming. Built into the HDMI 2.1 spec.

Enhanced Audio Return Channel (eARC): Supports lossless audio formats like Dolby Atmos and DTS:X over a single cable.

Quick Frame Transport (QFT): Reduces latency by accelerating frame delivery.

Quick Media Switching (QMS): Eliminates the black screen that appears when the source switches between content formats.

Real Gaming Impact

The difference that most gamers notice immediately is 120fps gaming. Games that support 120Hz on PS5 or Xbox Series X feel dramatically smoother than 60fps. The fluidity is especially noticeable in racing games, fighting games, and first-person shooters.

VRR is the other major upgrade. Without it, games that don't maintain a perfect frame rate show tearing or judder. With VRR enabled, those imperfections disappear even when the game is running at 87fps instead of a clean 120, it looks smooth.

Do You Need a New hdmi output cord?

Yes, if you want HDMI 2.1 features. The physical connectors are the same between HDMI 2.0 and HDMI 2.1 the cable looks identical. But internally, HDMI 2.1 cables are built to support the higher 48Gbps bandwidth. An HDMI 2.0 cable plugged into an HDMI 2.1 port will not give you HDMI 2.1 features.

The PS5 and Xbox Series X both include HDMI 2.1 cables in the box. If you're using those, you're set. If you've replaced the cable or need a longer one, verify the replacement is rated for 48Gbps.

Does Your TV Matter?

Absolutely. Even with a perfect HDMI 2.1 cable from your console, if your TV's HDMI ports only support HDMI 2.0, you won't access HDMI 2.1 features. The entire chain console, cable, TV port must support HDMI 2.1.

Most TVs from 2020 onward have at least one HDMI 2.1 port. Check which port on your specific TV supports HDMI 2.1, as it's often not all four ports.

For console gamers, upgrading to a proper HDMI 2.1 setup is one of the most impactful hardware changes you can make without touching the console itself.

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