dacostafilipe
Senior member
- Oct 10, 2013
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Explain to me how this customer uses variable refresh rates without buying an AMD video card.
You are mixing stuff.
FreeSync (or the name AMD will use when released) IS locked to AMD hardware.
A-Sync (the VESA spec) IS NOT vendor locked.
You need something like FreeSync to decide when to update the screen based on the applications refresh rate (and other stuff). But at the end, FreeSync just uses A-Sync to control the screen.
There's no reason to believe that we (=random developer) can't write our own software to control an A-Sync screen. Reading EDID and pushing commands over DP is not that complicated. This would also allow devs to control the screen with the engine and fix games that use special rendering techniques (ex: Diablo3 not working with G-Sync).
PS: Yes, this could also apply to G-Sync if somebody reverse engineer the protocol. But with A-Sync this is a lot easier and, most important, there would be no legal problems involved.