Shulou(Shulou.com)11/24 Report--

CTOnews.com, June 18 (Xinhua)-- the panels of many computers and mobile phones now have an "adaptive refresh rate (PSR)" function, that is, "reduce the refresh rate to reduce power consumption and save power while the screen content remains unchanged." AMD recently added a "FreeSync Panel Replay" function similar to "adaptive refresh rate" to the display code "DC" of its Linux kernel graphics driver.

According to the introduction and log of ▲ Freesync Panel Replay, the source AMDAMD believes that when the screen always displays the same content, GPU will still send the same frame to the receiver repeatedly. These repetitive steps are virtually useless and result in additional system power consumption. To address this situation, AMD launched "FreeSync Panel Replay" and introduced the main principles of this technology in the patch information:

1. When displaying the same content, DCN only needs to get one frame of data from DF / UMC / DRAM, which can reduce the power outage of the hardware path.

The 2.GPU transmits pixel data to the display through the main link of the DisplayPort interface, thus preventing the power outage of the source transmitter (TX) and receiver (RX).

It is reported that "FreeSync Panel Replay" cannot be used at the same time with the "Adaptive Refresh rate (PSR)" function, and it is only applicable to AMD Auron notebooks with Display Core Next 3.1.4 and above hardware.

AMD believes that "FreeSync Panel Replay" is superior to "adaptive refresh rate (PSR)", mainly in that it can "keep the source and receiver synchronized", so the latency can be lower than PSR, the usage scenarios can be richer, and the refresh rate can be adjusted more accurately. However, at present, AMD has not disclosed detailed comparison report data, so it is impossible to know how much power consumption FreeSync Panel Replay can save compared to PSR. CTOnews.com 's friends can find the details of the patch here.

Welcome to subscribe "Shulou Technology Information " to get latest news, interesting things and hot topics in the IT industry, and controls the hottest and latest Internet news, technology news and IT industry trends.