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.

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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