Freesync requires GCN 1.1 so that rules out the 7950. Be aware though if you use a discreet graphics card (rather that integrated) it will only work on games which allow you to select the render GPU. This is a very short list at the moment. The frame copy process only takes 1ms and so there should be no noticeable lag.What card should I use for this, 7950 or RX480?
My initial thought was 7950 would be best as it's the older / worse card but I think it has higher power consumption so maybe RX480 best?
Also keen to understand the input lag situation, not convinced it is worth the hassle if it means marginally smoother but also more lag, which would be kind of akin to just using vsync to start with.