A:Answer The MSI GE66 11UH-202 does not have Nvidia Optimus or G-Sync. It has a MUX switch that allows for you to switch between the integrated GPU in the CPU or the discrete GPU. The MUX switch can be accessed either within the BIOS or through the use of the MSI software. A restart is required once the change is made in order for the hardware switchover to occur. And sadly, this laptop's display does not support any kind of adaptive refresh rate. However, the external ports will support G-Sync through the DP 1.4 port, or G-SYNC compatible connectivity through the HDMI 2.1 port. Just make sure the graphics drivers are up to date with the most current version.