To date, we have already seen a lot of preliminary data on the performance of PCI-E 5.0 SSDs. They all revolve around the 10GB/s read/write figure, and are all based on the Phison PS5026-E26 controller. Phison says these are prototypes and final versions will have 12 GB/s read and 11 GB/s write. Competitive Silicon Motion will have a faster solution in its portfolio – the SM8366 controller, capable of 13.6 GB / s.
During the OCP Global Summit 2022, Kioxia demonstrated drive samples on the new controller. The drives have been in several formats (U2, E1.S, E3.S), but none of them are consumer grade SSDs.
Silicon Motion SM8366 has a 16-channel NAND memory interface, supports the NVMe 2.0 protocol and uses full 4 lanes of the PCI-E 5.0 interface. Unfortunately, there are no additional details on the filling.
In tests, the drive provides 13.6 GB / s when reading, as well as 3.4 million IOPS. Moreover, it is claimed that the final samples will have over 14 GB / s, and in terms of IOPS indicators, the data is more modest – more than 3 million and that’s it.