For some time now we have seen how AMD occasionally talks about a technology called FreeSync. But what does it contain? What are its benefits? Can I use it with my screen?
What is the help of AMD FreeSync?
Understanding the need for technologies like FreeSync for AMD or NVIDIA G-SYNC We need to warn that there is a lack of interaction between one of the GPU’s frames and its display on screen. What is the reason for this lack of cooperation?
The screens change the image that shows a certain number of times per second, this is called the refresh rate
This is because the information posted on the screen does not match the current framework in that part of it, which creates annoying artefacts such as Tearing.
Solving this, which means that the screen update is no longer controlled by the monitor, allows it to be controlled by the GPU itself and to achieve a direct interaction between the screen and the image snapshot, thus avoiding art objects produced from the compilation.
How are photos sent on screen?
In simple terms, when the GPU produces a frame, it acts to drag it to a memory location that we call the image buffer, separated by two separate memory buffers:
- The first of them kept a pre-made GPU frame, which we call Front Buffer or front buffer, which was already completed by the GPU living in memory for the display driver to read and send to the HDMI or DisplayPort interface.
- Second, we have a GPU-drawn frame, which is now what we call Back Buffer or Background buffer, the screen controller does not meet.
When the controller produces an image from the front mound, then its values are completely removed and replaced, the former front buffer becomes the rear buffer and vice versa.
But what exactly is AMD FreeSync?
FreeSync is nothing but a trade name to adapt to AMD GPU’s VESADISPLAYPORT ADAPTIVE-SYNC. VESA standards that indicate how a photo should be sent to each screen to marketers.
Control when you start sending an image to the screen, which controls the start and end of the direct sync (V-SYNC) of that frame. The concept with DISPLAYPORT ADAPTIVE-SYNC, or FreeSync when it comes to AMD, is none other than giving the GPU full control over when direct synchronization starts.
The advantage of AMD taking VESA standard is very simple, all VESA Adaptative Sync compatible screens are compatible and unlike G-SYNC, we can use it again if our monitor supports HDMI 2.0 onwards.
