Variable refresh needs hardware that did not exist before g-sync. It doesn't have to be proprietary, but it does have to be designed around variable refresh. There is a ton of misinformation floating around on this, but anyone that tells you it's "just a firmware update" is lying or misinformed. That includes eDP based displays.I'm willing to admit I'm wrong if someone publishes firmware that turns a pre g-sync product into an adaptive sync or g-sync display.
2/28/15 at 6:16pm