It may just be for the PS5 SSD but I assumed it was also possible for Series X. The PS5 HDD is faster though so maybe not.
The PlayStation 5's new SSD is revolutionary, delivering massive efficiency through speed and enabling true next-gen performance on the console.
www.tweaktown.com
The 5 bullet points a little bit down is what I was referring to where it says "no load times".
You must be a fan of Sony marketing team...
There's no way PS5 will "boot in a second". It make wake up in a second. It may show something interactive after a second. Boot - nope. Not to a state when you can launch a game.
I also really doubt games will launch in a second - unless, again, it means waking up stopped VMs rather than starting the whole program.
Disk speed is just one of the factors. Running programs just takes time.
Existing consoles keep can keep the last gaming session in RAM, so it can be brought back "instantly". But this is purged when you launch a different game.
Maybe, thanks to the very fast SSD, Sony will be able to keep a few sessions dumped onto the hard drive. That would be great for sure (and possible on Xbox too, just a little slower).
Having "no load screens", on the other hand, is more about game design than hardware performance.
Do you know why there's a long tunnel, an elevator or some funky animation between game locations? It's there to make you feel like you're still gaming. But actually you're just looking at something barely more interactive than "please wait".
For the same reason many games offer save/spawn locations in rooms or houses - ideally far away from the entrance (GTA V?). The 10s it takes to exit the cramped space and enter a larger location is the bonus time developers gave the console to load more data.
If there was a game for PS5 that lets you teleport to any point in the game, you'd see a loading screen for sure.
The interview mentions the idea of rotating your view in games and streaming textures, which I've already seen at least 3 times in different places, so Cerny must be very proud of the concept:
"If it takes half a second to turn, that's 4GB of compressed data you can load"
But such game design also implies that instant look behind feature has to be dropped completely (and it's pretty common in racing games or 3rd person adventure/shooters).
But sure, the combination of fast hardware and careful game design will create an effect of continuous gaming. And that's great for sure.