The problem with HDMI 2.1 is that it detects 4K120 as NATIVE resolution, so any DSR factors are 120hz. However, DisplayPort 1.4 detects 1440P240 as NATIVE resolution, so all DSR factors are also 240hz which means with HDMI 2.1, you can only do 4K120, but with DisplayPort, you can do 4K240 using DSR.
Maximum supported resolution. HDMI 1.4 supported 4K resolution at 30 FPS, while HDMI 2.0 raised the bar to 4K at 60 Hz or 8K at 30 Hz. The latest HDMI 2.1 standard takes it even further, enabling
DisplayPort first appeared in 2006, while HDMI came out in 2002. Both are digital standards, meaning all the data about the pixels on your screen is represented as 0s and 1s as it zips across your Essentially, it all comes down to bandwidth: The current bandwidth capacity for HDMI 2.0 is 18Gbps, but HDMI 2.1 clocks in at a robust 48Gbps. This increase in bandwidth allows HDMI 2.1
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Dynamic HDR: While HDMI 2.0 is compatible with current HDR formats (HDR10/10+, Dolby Vision, and HLG) HDMI 2.1 expands open support for any additional Dynamic HDR formats that may become available. Gaming: Variable Refresh Rate (VRR) and ALLM (Auto Low Latency Mode) added to support gaming needs.
HDMI 2.0b – Another small update in 2016 adding HLG HDR support. HDMI 2.1 – Released in 2017, supports higher resolutions up to 10K and bandwidth up to 48 Gbps. Key enhancements for gaming and home theater. HDMI 2.2 – Introduced in 2020 as an update to the content protection specification HDCP 2.2 rather than the core video interface.
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difference between hdmi and hdmi 2.1