A good example of its limitations would be to look at the original pokemon games and the original gameboy. The gameboy itself only had around 12 colours to be chosen from and its sound is very pixelated. As time progressed so did the level that these systems began to improve so by the time of the 7th generation of consoles. The machines were capable of producing a huge amount of different colours and sounds.
This can be shown by sheer amount explosions are used in mordern games. In older consoles it would of been very difficult to create a realistic looking explosion. While modern times can create one very easily.
There are two different ways that sound can be betrayed in games. The first world be using the basic sound system that would be built into the television and would give you a basic sound to the games but it would be very basic. While the better oppotion would be using surround sound because it gives a much more imersive type of gameplay specially if using 5.1 system.
When it comes to the case of display. It is a lot simpler to find a good display system than to create a good sound system. This is due to the fact that for sound all you need is a good tv capable of providing HD quality. Display has improved a lot and most recently the latest thing tecehnology is a machine OCULUS RIFT. The OCULUS RIFT is the latest in virtual reality and is a pair of large glasses that give the player complete vision as if they are looking through the eyes of the player. This system also comes 2 speakers on either side of your head so you would be completely imersed in the world.
