I do not believe that the laptop Nvidia GeForce GTX 680m GPU is qualified to run the required G-SYNC. So you can only use the S2417DG at 60Hz non-overclocked. The oldest qualified desktop Nvidia video card that I have seen working was the Nvidia GTX 980 Ti with a pixel clock of 586MHz. What is the pixel clock on that laptop 680m? You should ask the Alienware owners here to see if they have used the S2417DG in overclocked modes.