A while ago I was surprised by an email from Nvidia wanting me to come down and test drive their revolutionary new tech, then tentatively entitled VRR, now known as G-Sync. It was pretty cool wandering the halls and seeing into the secret tech facilities at Nvidia and it was even cooler still discussing creating an IPS 1440 120Hz G-Sync enabled display for the hardcore gaming community.
What is G-Sync? Simply put it changes how the GPU and monitor talk to each other essentially revolutionizing the display experience and ultimately, and finally, updating Vsync.
As of today gamers have to make a choice in every game - enable Vsync to enjoy a tear-free gaming experience or disabling Vsync thereby creating visual anomalies, but increase frame rates.
Without the use of all the charts and graphs, essentially G-Sync allows a properly equipped display to provide a variable refresh rate as the data is fed from the GPU to the display.
Overall this means your game at 55FPS will run at 55Hz - automatically. 113FPS? 113Hz. This means zero tearing, no hassle with enabling/disabling Vsync.
Having seen it firsthand, and playing Crysis 3 with it on a display and off one, it is truly something you must experience to understand how important a graphic leap this is. Both computers I toyed with were identical, both running at around 40FPS, and both having the same input lag. The G-Sync enabled system seemed to be running at least 10-20FPS higher than the non-G-Sync system. It was just butter smooth.
See this link for Nvidia's official press release and to read a much better description from my tour guide (thanks Tom!) Tom Petersen. NVIDIA G-SYNC PRESS RELEASE
This is a monster step forward for all gamers and I cannot wait for the first Tempest G-Sync, 120Hz 1440 IPS panel on the planet!