WyomingKnott
Legenda in Aeternum
Adarious :
I could be wrong here...but wasn't the big focus on freesync/gsync in terms of refresh rate because it could hit 120/144/165hz refresh rates? I think a 4k monitor at this point is overkill; 2k is what video cards are able to deal with in terms of gaming.
The idea of the syncs is for the monitor to adapt the frame rate to match what the card can produce, so that you don't end up with display frames that are half one rendered frame and half the other. I think that this is called "tearing."