Understand HDMI 2.1 and HDMI 2.0 and relationship of bandwidth and 4K resolution

The simple reality now is that HDMI cable bandwidth is an essential consideration. For 4K 60Hz with HDR for gaming and video you need a proper HDMI 2.0 cable with the full 18Gbps, while looking ahead to HDMI 2.1.

I feel like I need to explain what HDMI 2.1 means because there are people asking if they need to buy a new TV and/or cables. : r/PS5

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The Force That's Driving HDMI 2.1 Cable Functionality Improvements

HDMI Cable: Everything You Need to Know (Explained) - Anker US

HDMI 2.0 vs 2.1: Which Cable Should You Buy? - The Plug - HelloTech

The 4K HDMI Cable Rip-Off: What to Know About HDMI 2.0 and Ultra HD Cables - TurboFuture

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When Do I Really Need HDMI 2.1 or Is HDMI 2.0 Enough?

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Understanding Bandwidth and What it Means for HDMI®

HDMI 2.1: What you need to know - CNET

What Are HDMI 2.1 ARC and eARC Cables? - Dolby - Dolby

HDMI 2.1 vs HDMI 2.0

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HDMI 2.1: Why It Matters for PCs and TVs in 2021