My wife and I are considering an Air for our house. My question was about an external monitor for docking the Air. We a few year old 24' monitor pushing 1900x1200 rez. After reading many reviews I understand the Air can push a 2569x1440 Thunderbolt with ease. My question is would the Air have an easier time pushing my 1900x1200 or would the external monitor rez not matter to the Air as it will be using the same effort either way? I'm sure this is obvious but I wanted to know for my own curiosity. Thanks for yall's time!