It still allows for high-definition video and (in many cases) audio, but its standards are a bit different. Nvidia's similar G-Sync technology, however, does not always work over HDMI-on many monitors, it’s DisplayPort-only.ĭisplayPort looks similar to HDMI but is a connector more common on PCs than TVs. In addition to the above, all modern HDMI ports should support AMD's FreeSync technology, which eliminates screen tearing in games by matching the monitor's refresh rate to your video card's output framerate (with newer HDMI versions supporting FreeSync at higher refresh rates). If you ever experience issues, check the cable-you may find it isn’t up to snuff. Lower-spec cables may still work under certain circumstances, but can be finicky, adding “snow” to the image or not routing your surround sound audio properly. For 8K at high refresh rates, you may need even more bandwidth, so check the description and reviews of any cable you plan to buy. If you want to take full advantage of those specifications, you'll also need an HDMI cable capable of the correct bandwidth.įor example, if you're running 4K at 60Hz with HDR, you'll want a cable labeled Premium High Speed (Opens in a new window) or 18Gbps (or better). These are somewhat simplified explanations of each HDMI version, as there are other feature improvements in each standard, but they're the things most PC users will care about. A newer version (HDMI 2.1a) adds Source-Based Tone Mapping (Opens in a new window) (SBTM). HDMI 2.1 includes variable refresh rate like FreeSync, though some HDMI 2.0 monitors also support the feature.

HDMI 2.1: Supports up to 10K resolution at 120Hz, as well as improved HDR with dynamic metadata and enhanced Audio Return Channel (eARC) which allows sending Dolby Atmos and DTS:X audio from the display to a receiver. HDMI 2.0: Supports up to 4K at 60Hz, and later versions (HDMI 2.0a and 2.0b) include support for HDR. On modern monitors, you'll find any combination of the following ports: There have been multiple versions of HDMI, each improving on the last. HDMI is most commonly used on TVs, sending high-definition video and audio signals over one cable for an easy, clean setup. Let's start by talking about HDMI, the standard with which you're probably most familiar.

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