None. From what I know & I used to write graphics drivers, AMD's closed source driver is horrible. An absolute mess, http://richg42.blogspot.com/2014/05/the-tru

None. From what I know & I used to write graphics drivers, AMD's closed source driver is horrible. An absolute mess, http://richg42.blogspot.com/2014/05/the-truth-on-opengl-driver-quality.html http://richg42.blogspot.com/2014/05/the-truth-on-opengl-driv... Their open source driver is actually more reliable. Qualification: I'm only talking about the opengl driver. I don't know anything about their DirectX driver.