FreeSync Testing

A Quicky FreeSync Video

Now the problem with explaining and describing what you will see with your eyes, is that we can't really show it. To really understand AMD FreeSync / Adaptive Sync you'll need to experience it with your own eyes. Now we did record a video, but the camera and then conversion on YouTube will make things worse again, only a high-speed camera could in fact show you what is being rendered. We'll give it a try though, but the stutters you see in the video below with Adaptive Sync enabled do NOT show on screen at all. Please keep that in mind. 

Mind you that the video is recorded at 30 FPS, meaning stuttering will occur on your side that you do not see in a real-world situation on the compatiber monitor - but yes, you will see that in a recorded video. Above a video we took with the ACER FreeSync enabled panel.

Unfortunately due to CeBIT and other embargo articles I have not yet been able to verify performance with FCAT. However AMD supplied some data showing exactly what we need to know.

By concentrating on a focused period of time, we note the performance difference between AMD FreeSync technology maintains consistent performance.
 

What if you reach an FPS higher than 144 Hz  / FPS  ? “Outside of the range” is used to define operation above the refresh rates supported by the monitor (i.e. above 144Hz) Below is an illustration of the behavior.
 

Examining the above graph with Alien Isolation, AMD’s FreeSync™ allows the user to choose between VSYNC = OFF, thus enabling fastest performance possible OR choose to run with VSYNC = ON thus limiting operation to the maximum supported refresh rate of the monitor (ie. 144Hz) On the contrary, when enabled, G-SYNC operates with V-SYNC = ON at all times thus always limiting operation to 144Hz. Similarly, the same behavior can be noted with another title, Tomb Raider.