@ Sardauk
Looking at your games library.
For example you will have to connect Killzone 2 to a good 7.1 surround audio system to fully enjoy the audio quality.
Uncharted and Killzone 2 have some of the best quality graphics, great quality textures. For example the car section in Uncharted streams a lot of quality assets and the cutscenes are top notch, these kind of things take up a lot of space.
MGS4 has good quality textures, graphics varierty and cinematics as well.