My first videogame machine was for black and white TVs and had 10 games, and all of them bar the target shooting game were variants of Pong.

PS2 was the last really big graphical leap. My fucking mind was blown by GTA3.

Since then we've had higher resolution, normal maps, physically based rendering and now raytracing, but none of it really feels that huge when moving from one gen to the next. PS2 came out and everything from before was obsolete, instantly. It even had backwards compatibility but I think I used it exactly once just to see the texture "improvements" (they actually just blurred them). This gen I've used it all the time.