It's a head-scratcher how many folks don't get what a massive shift to SSD the new generation will bring, which I think in part is because I/O is just not a sexy thing to talk about but because most folks just don't realise how having slow HDDs has limited game design and game designer's options this past generation.
And it's really easy for Sony to sell. If it is indeed the case, "NO LOAD TIMES!!!" is an easier concept to sell to gamers than more shinier graphics. So shiny. shiny.
Even better... what about ”PERSISTENT DYNAMIC OPEN WORLDS”.
Remember when you in GTA steal a car, go up a couple of streets, drop the car, get back to there you started on foot, and when you get back to the car he is not there?
Or when you shoot a wall full of bullets, get away, and the wall is now intact again?
What if the ssd could register all world changes you create with random interaction so that things stay in there. Mix this with AI and you could get a dynamic world, a living world like never before. Why can’t you destroy a house with rockets on GTA unless its scripted? One of the reasons is because world changes are kept in memory and memory cannot keep them forever since it is required.
in a dynamic world, destroy a house, even one that would be used in a later mission, and the AI would choose another for the mission. If there was enough time between the time you destroyed the house, and the actual mission, you could even see the house being repaired in the meantime, and unless you destroy it again, it would be ready on the required mission.
With next gen and a fast ssd that could become a reality. All it takes is a way to register and load world changes. The world could change, NPCs could also change the world, like instead of bullet decals just disappearing, or always staying, you could go to location on the next day, and see people repairing the damage you made. This would need extra graphical assets, and AI, but above all, a way that is not available today, to register the changes.
Memory cannot do this since its volatile and above all not enough, but an ssd could allow it. In the limit games could be so dinamic that two runs would never be the same depending on player interaction.
Both consoles could start to do something like this, but PS5, with its fast SSD would be on a league of it’s own.