Originally posted by Kolysion™: Originally posted by Azza ☠: HDMI 2.1 is 48 Gbps and support 4K 120Hz with HDR just like DisplayPort 1.4 already does anyways. Note there's DisplayPort 1.4 and 1.4a. DisplayPort 2.0 will support 77 Gbps and duel 4K monitors or a single 4k at 240 Hz or single 8k at 85 Hz.
HDMI 2.1 Bandwidth Is Almost 3 Times That of v2.0. First off, the new version of HDMI provides bandwidth up to 48 Gbps, a vast improvement over HDMI 2.0’s 18 Gbps bandwidth. This allows you to transmit 5K, 8K, even 10K video resolutions with frame rates up to 120 fps (frames per second) with Dynamic HDR (High Dynamic Range). HDMI 2.0 has been retired and is no longer being licensed. According to TFTCentral, which broke the story, new devices should no longer claim to support HDMI 2.0, all features of HDMI 2.0 are a subset of HDMI 2.1, and all of the features associated with HDMI 2.1 are optional. Devices claiming HDMI 2.1 support are supposed to list which of its
The LG OLED65E9 TV is equipped with HDMI 2.1 controllers. As well as providing a maximum bandwidth of 48 Gbps compatible with video resolutions and refresh rates that are a lot higher than the HDMI 2.0 standard (up to 8K 50/60 FPS and 4K 100/120 FPS), the HDMI 2.1 standard also offers two new features for gamers: VRR and ALLM.
While TVs with HDMI 2.1 ports are pretty much guaranteed to have eARC support, several manufacturers have added eARC support on their devices with HDMI 2.0 as well. You can check the HDMI connectors on the back of your device, and an eARC-compatible device will typically have eARC mentioned next to a connector.
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Both the cable and HDMI 2.1 standards will be backward compatible with their previous models. For everything over 8K at 60Hz, HDMI 2.1 uses DSC (Display Stream Compression), which is an effective form of data rate compression without any impact on the image quality. It increases latency, but the added delay is imperceptible (below 1ms).

Of course, this ultra-high-speed HDMI 2.1 cable is backward compatible. It can be used on other HDMI-enabled devices but the improved features that come with this HDMI version will not be supported. The improved speedier refresh rates are also impressive – 60 Hz for 8K and 120 Hz for 4K. Video resolution and frame rate support available range
Version HDMI 2.1b of the HDMI Specification is backward compatible with earlier versions of the Specification and is available to all HDMI 2.0 Adopters. Supporting Materials Supporting graphics, photos, and multi-language overview presentations on HDMI 2.1b are available for download and reproduction .
More specifically “HDMI-VRR“, this is a technology that can be built in to HDMI 2.1 allowing for variable frame rates from compatible graphics cards and modern games consoles. VRR can be used to reduce tearing and stuttering in varying frame rate gaming, and has already been implemented by Microsoft on their Xbox Series X/S consoles. 3xk6ftE.
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