https://wccftech.com/ps5-io-system-to-be-supercharged-by-oodle-texture-bandwidth-goes-up-to-17-38gb-s/

The PS5 Input/Output (IO) system has been the topic of much discussion ever since Epic CEO Tim Sweeney explained its structural advantages over the PC (as well as any other gaming platform).

While the raw speed of the PS5 SSD drive might have been theoretically surpassed by the new Samsung 980 Pro PCIe 4.0 NVMe SSD, it is the architecture of the PS5 itself that boosts its capabilities beyond what's currently achievable elsewhere. You might remember that the official specifications listed the console's IO bandwidth at 5.5GB/s with uncompressed data and 8-9GB/s with compressed data.