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VESA Adds Adaptive-Sync To DisplayPort 1.2a Specification

Hardware

Published on 12 May 2014 03:00 PM EDT
Written by Michael Larabel in Hardware
20 Comments

The VESA association has added "Adaptive-Sync" to the DisplayPort 1.2a video interface specification. Adaptive-Sync is a vendor-neutral way of having a dynamic/adaptive refresh-rate and similar to NVIDIA's G-Sync.

The DisplayPort Adaptive-Sync is vendor-neutral and doesn't require any new, specialized hardware like is needed with NVIDIA G-Sync, as long as it's in compliance with the DisplayPort 1.2a specification. Adaptive-Sync has mostly been driven by AMD as a "FreeSync" alternative to NVIDIA G-Sync.
Computer monitors normally refresh their displays at a fixed frame rate. In gaming applications, a computer’s CPU or GPU output frame rate will vary according to the rendering complexity of the image. If a display’s refresh rate and a computer’s render rate are not synchronized, visual artifacts—tearing or stuttering—can be seen by the user. DisplayPort Adaptive-Sync enables the display to dynamically match a GPU’s rendering rate, on a frame-by-frame basis, to produce a smoother, low latency, gaming experience.

In applications where the display content is static—such as surfing the web, reading email, or viewing a slide presentation—DisplayPort Adaptive-Sync allows the display refresh rate to be reduced seamlessly, lowering system power and extending battery life.

During the playback of lower frame rate video content, Adaptive-Sync allows the source to optimize transport of the video format leveraging OS and DisplayPort interfaces. In addition to providing smoother video playback, the lower frame rate enabled by Adaptive-Sync also reduces power demand, extending battery life.

It will still probably be a while before seeing DisplayPort 1.2a systems available for sale, but more information on the VESA-approved Adaptive-Sync can be found via today's VESA.org press release.

About The Author
Michael Larabel is the principal author of Phoronix.com and founded the web-site in 2004 with a focus on enriching the Linux hardware experience and being the largest web-site devoted to Linux hardware reviews, particularly for products relevant to Linux gamers and enthusiasts but also commonly reviewing servers/workstations and embedded Linux devices. Michael has written more than 10,000 articles covering the state of Linux hardware support, Linux performance, graphics hardware drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated testing software. He can be followed via and or contacted via .
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