Enjoy a smooth gaming experience with a G-Sync monitor. This adaptive sync technology ensures that your monitor's refresh rate and NVIDIA video card run simultaneously. When your monitor has G-Sync, the variable speed is leveled with the fixed speed of the monitor. This prevents lag and screen tearing while you game. That way, your games run more smoothly when your monitor has G-Sync 144Hz, then without. Keep in mind that G-Sync is a paid service.