Phison leads the storage race for PCIe 4.0. Its E16 controller already allows the SSDs of Corsair, Galax and Gigabyte to reach read speeds of 5000 MB / s, but the company promises to launch a new driver “for the first quarter of 2020” that will allow us to reach readings of up to 6500 MB / s, twice what many current M.2 SSDs can offer in PCIe 3.0 x4.
Although theoretically in PCIe 4.0 the limit per lane 4x is about 8 GB / s, the reality is that These speeds are impossible to achieve in the standard. That’s why there are not 4 GB / s SSD in PCIe 3.0 x4 or 2 GB / s SSD in PCIe 3.0 x2.
The Samsung 970 Pro is considered the fastest PCIe 3.0 x4 SSD in the market, with sequential read speeds of up to 3500 MB / s, if we duplicate this, the PCIe 4.0 could find us with speeds of up to 7 GB / s, with a driver to match. Phison 6500 MB / s controller is close to this estimate, and this is an exciting estimate for just the second year of PCIe 4.0 in terms of storage.