HDMI 2.1 brings several improvements over its predecessor, HDMI 2.0, and is designed to support higher resolutions, refresh rates, and advanced features. Here's an overview of the key features of HDMI 2.1:
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Higher Resolutions: HDMI 2.1 supports resolutions up to 10K, providing increased clarity and detail in supported displays.
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Increased Bandwidth: One of the significant upgrades is the higher data transfer rate. HDMI 2.1 offers a maximum bandwidth of 48 Gbps, compared to HDMI 2.0's 18 Gbps. This increase is crucial for handling the larger amounts of data associated with higher resolutions and refresh rates.
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Higher Refresh Rates: HDMI 2.1 supports higher refresh rates, which is important for smoother motion and improved gaming experiences. It enables 4K resolution at 120Hz and even 8K resolution at 60Hz.
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Dynamic HDR: HDMI 2.1 introduces Dynamic High Dynamic Range (HDR), allowing for scene-by-scene or frame-by-frame HDR adjustments. This results in more vibrant and detailed images with better contrast.
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Enhanced Audio Return Channel (eARC): HDMI 2.1 includes an upgraded version of the Audio Return Channel (ARC), known as eARC. This feature enables the transmission of high-quality audio formats, including Dolby Atmos and DTS:X, from a compatible TV to a connected audio device.
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Variable Refresh Rate (VRR): VRR is a feature that reduces screen tearing and stuttering in video games by allowing the display to adjust its refresh rate dynamically to match the frame rate output of the source device.
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Quick Frame Transport (QFT): QFT reduces latency for smoother gaming experiences. It is especially beneficial for gamers who demand low input lag.
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Auto Low Latency Mode (ALLM): ALLM allows the connected device to automatically switch to its lowest latency mode, ideal for gaming where minimizing input lag is crucial.
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Enhanced Gaming Features: HDMI 2.1 introduces additional gaming-centric features like Quick Media Switching (QMS) for eliminating delays when switching between different resolutions and refresh rates, and Variable Refresh Rate (VRR) for smoother gaming experiences.
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Backward Compatibility: HDMI 2.1 is backward compatible with earlier HDMI versions, which means you can use HDMI 2.1 devices with older HDMI ports, though you may not get all the benefits of the latest standard.
It's important to note that to take full advantage of HDMI 2.1 features, both the source device (such as a gaming console or media player) and the display (TV or monitor) need to support HDMI 2.1. Always check the specifications of your devices to ensure compatibility.