Far Cry 3 vsync and frame buffering.

[Trentonater]

Far cry 3 allows you vsync for 1 or 2 frame as well as max buffered frames from 0-5. I would like to know which setting is the smoothest and also the difference between the settings.

My computer is:

2 gtx 570 hd 310.70 driver

Intel core i5-3570k

8GB ram