DVI is the type of connection
RGB is the colour space

Chances are, you're already using RGB.
There's a good chance you're using VGA, and DVI is quite similar. It's just how the screen connects to the computer. There's nothing wrong with it.

RGB is just how the colours are displayed (Red, green, blue) and one up from that is RGBY (including yellow). Again, nothing wrong with RGB, but RGBY just makes the yellows brighter.


You can't really compare them. One is the colours you see, one is how the colours get there.