I noticed that even using the mbp in dual monitor mode with the mini display port, never lags or feels like the graphics stutter like it used to with using it via dvi on the 23" ACD.
Its due to the much higher bandwidth that the mini display port can output. Not to mention the mini display port is so damn small its so convenient!
Its due to the much higher bandwidth that the mini display port can output. Not to mention the mini display port is so damn small its so convenient!