That monitor does not have GSYNC.
The GSYNC module alone adds a lot to the cost of a monitor.
*With an 144Hz monitor, I suggest learning how to use "Half Adaptive VSYNC" per game via the NVidia Control Panel.
NCP-> manage 3d settings-> add game-> (select Half Adaptive VSYNC)-> save
It will then synch to 72FPS which is more practical. If you turn VSYNC OFF then you get screen tearing, however if you turn VSYNC ON to eliminate this you get STUTTER added if you can't output at least 144FPS.
Using the above method you will cap at 72FPS (VSYNC ON) so get no screen tearing, however if you drop below 72FPS VSYNC is auto turned off (screen tear but not added stuttering).
Tweak game settings as appropriate. About 5% of time below 72FPS (thus seeing screen tear a small amount of time) works good.