First of all, the RGB slot is known to comprise three rows of fifteen different channels or holes. This is not referring to the popular ones of just the color blue, green, and red, which are popularly seen around. This causes quite a lot of confusion for people. The RGB connector is just typically similar to that of the D-subminiature (D-sub) and VGA connection.
Their connectors usually have fifteen pins with five on a row of 3. This is the kind of connection that is designed to be used between your PC and projectors or LCD screen. On the other side of the coin, the DVI, which stands for Digital Visual Interface, is a high-end quality video framework that is used for digital displays.
It helps to display a digital video on a medium without making the real data to be compressed. This framework is usually compared with the high esteemed High Definition Multimedia Interface (HDMI), and it is considered to be better than VGA or RGB connection.