Nvidia G Sync. The new Lenovo Legion Y27GQ monitor is powered by Nvidia G Sync. Smoothest performance -NVIDIA G-sync technology with 240 hz. The Lenovo y27g curved gaming monitor gives you 27-inch of panoramic, high-contrast, wide-angle viewing on a unique r1800 curved panel optimized for gaming - the most extreme curve panel available today NVIDIA G-Sync display technology synchronizes the refresh rate to the gpu to eliminate screen tearing while minimizing display stutter and input lag. It’s a display that’s designed to up your game.