For the longest time, Nvidia has kept monitors with G-Sync variable refresh rate (VRR) tech to itself, allowing only Nvidia GPUs to use the tech. But it looks like the company is looking to open up the tech to useres of AMD graphics as well.
TFT Central reports that future G-Sync monitors will support HDMI-VRR and Adaptive Sync over HDMI and DisplayPort. This will allow machines using AMD graphics, including consoles, to make use of at least some of the benefits of using a G-Sync display. That said, it remains to be seen if AMD machines will be able to make full use of Nvidia’s tech.
That said, this needs a new firmware in order to work. And this new firmware will only be compatible with newer G-Sync displays, not existing ones. In other words, only newer G-Sync monitors will be able to give AMD users the benefit of G-Sync. TFT Central cites an example in the form of the Acer Predator X273 X.
Nvidia did the opposite earlier in the year, by making its graphics cards compatible with FreeSync monitors. But that did not make all FreeSync monitors compatible with Nvidia graphics cards. It remains to be seen if Nvidia will make all future G-Sync monitors compatible with AMD GPUs, or only a few as is the case with the FreeSync monitors.
(Source: TFT Central)