Mini DisplayPort is a compact version of the DisplayPort connector introduced by Apple in 2008. Mini DisplayPort is free to license, and in 2009 it was included in the official DisplayPort 1.2 spec. In 2011 Apple and Intel announced the Thunderbolt format, which used the same physical connector, but significantly different protocols.
Screen refresh rate is the number of times an image on any type of monitor or television is reconstructed per second. This is measured in hertz.. (Hz).
Refresh rate is the number of times your TV can display images in a span of a second. Its unit measurement is Hertz, creating your labels 60Hz, 120Hz, and your 240Hz. Here, you will learn the difference between the three. Contents. 1  1 Definitions. 2  1.1 60Hz TV. 3  1.2 120Hz TV. 4  1.3 240Hz TV. 5  2 Comparison Chart.