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What is Adaptive Vertical Sync?

Published in Computer Graphics 2 mins read

Adaptive Vertical Sync (Adaptive VSync) is a graphics technology that aims to improve the smoothness of gameplay by dynamically adjusting the refresh rate of your monitor to match the frame rate of your game.

It aims to eliminate screen tearing, a visual artifact where the screen displays a split image due to the frame rate being higher than the refresh rate.

Unlike traditional VSync, which locks the frame rate to the refresh rate, Adaptive VSync allows the frame rate to exceed the refresh rate, but only when the game can consistently deliver a high enough frame rate. This helps to reduce input lag and stuttering while still preventing screen tearing.

How Adaptive VSync Works:

Adaptive VSync monitors the frame rate of the game and dynamically adjusts the monitor's refresh rate accordingly.

When the frame rate is below the refresh rate, the monitor will operate at its native refresh rate, ensuring a smooth and tear-free experience.

When the frame rate is above the refresh rate, the monitor's refresh rate will be increased to match the frame rate, allowing for a higher frame rate without introducing screen tearing.

Benefits of Adaptive VSync:

  • Reduced screen tearing: Adaptive VSync eliminates screen tearing by synchronizing the refresh rate with the frame rate.
  • Improved smoothness: Adaptive VSync allows for a smoother gaming experience by dynamically adjusting the refresh rate.
  • Lower input lag: By allowing the frame rate to exceed the refresh rate, Adaptive VSync can reduce input lag, making the game feel more responsive.

Examples of Adaptive VSync Implementations:

  • AMD FreeSync: A technology developed by AMD that enables adaptive sync on compatible monitors and graphics cards.
  • NVIDIA G-SYNC: A similar technology developed by NVIDIA that also enables adaptive sync on compatible monitors and graphics cards.

Conclusion:

Adaptive VSync is a valuable graphics technology that can significantly improve the smoothness and responsiveness of gameplay. By dynamically adjusting the monitor's refresh rate, Adaptive VSync eliminates screen tearing while maintaining a high frame rate, resulting in a more enjoyable gaming experience.

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