Western Digital WD Black SN850X SSD Incoming

It appears as if Western Digital is preparing a new flagship Gen4 NVMe solid state drive, the WD Black SN850X. The drive was referenced in a December 10th certification filing with the PCI-SIG. The drive will feature a PCI-Express 4.0 x4 interface, but not much else is known about the drive. We can assume that the “X” in its naming could signify a bump in performance over the current WD Black SN850. This could be achieved from an updated controller, newer generation NAND flash, or better stock cooling.

wd black sn850x

The filing also mentions a drive called “SN820” which could be a successor to the PC SN810, which the company sells to integrators and OEMs.

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