PS5 games use BD-66 and BD-100 but Xbox Series X games are still limited to BD-50

[BrownianMotion]

Originally Posted by BijouMan

With the sophistication of the newest generation of games comes an increase in the demand for fast access. Direct access from the disc, even at the speed the PS5's disc drive runs at, is no longer fast enough. It was fast enough in the seventh generation, but not the eighth and certainly not the ninth.

This isn't true. Storage access and file I/O is no longer a bottleneck on the consoles (or on PC, once games start using DirectStorage.) These new SSDs and storage APIs are capable of read speeds of several GB/s, which is more than enough. Indeed, these speeds would allow the transfer of assets of such a high level of quality that the GPUs inside of the PS5 and Xbox Series X|S wouldn't even be able to render them at a playable frame rate. You're already seeing the amount of compromises that have to be made on console any time ray tracing is implemented in a game, and next-gen engines like Unreal Engine 5 will be targeting 30fps on the consoles. This is due to the outdated GPU/CPU, not the storage.