https://wccftech.com/nvidia-g-sync-amd-freesync-gaming-monitor-support-official/

NVIDIA has confirmed that they will be supporting the VESA Adaptive Sync standard through their G-Sync compatible / certification programme. The initiative is to allow Adaptive Sync support with GeForce GTX/RTX graphics cards on monitors which aren’t certified under the G-Sync label and are sold as AMD’s Freesync compatible displays.

For a long time, NVIDIA has been developing their G-Sync monitor technology to offer a seamless, tear-free, flicker-free and smooth gaming experience on displays that utilize their G-Sync module. The proprietary technology and the underlying hardware meant that the monitor cost would go up drastically but in return, you’d get a quality gaming experience. Soon after G-Sync was announced, AMD came up with their own display technology dubbed Freesync. AMD utilized the VESA standard and their Adaptive Sync technology over DisplayPort to offer similar tear-free gaming experience.