AMD FreeSync and Nvidia G-Sync can synchronize the refresh rate of a compatible monitor with the output of an AMD or Nvidia video card. This ensures smooth motion and eliminates screen tearing, a distracting visual artifact. You might be surprised to learn that most AMD FreeSync and Nvidia G-Sync monitors rely on the VESA Adaptive Sync standard. This is why many gaming monitors now support both. The difference in performance is minimal. Our G-Sync vs. FreeSync comparison goes in-depth on their similarities and differences.