[osmala]

The whole point of the exercise was to get rid of bandwidth requirements from the cable. Its running that locally on local X server. X server commands do not require moving all the pixel data, they do not all that redundant data like logos and pictures, the text you see isn't at X protocol level group of pixels its bytes to a font. You move the icon once through the cable and the server will hold to it. That is beauty of X server being capable of running remote apps. From the server point of view your local computer would become remote computer running the application and the monitor would become the computer, handling input and running local apps which pretty much only consist the server that handles the graphics.