Western Digital is preparing to update its client SSD lineup with the addition of a new flagship model, the WD Black SN850X. This drive was mentioned in the PCI-SIG certification file dated December 10th.
The drive is equipped with a PCIe 4.0 x4 interface. More details about it are not available, but the “X” in the name probably indicates improved performance over the current flagship WD Black SN850 shown in the illustration. The boost can come from an updated controller, a new generation of NAND flash, or better cooling. Interestingly, the document also features a product called the SN820, which may be the successor to the PC SN810, a drive that the company sells to system integrators and OEMs without using its own brand.
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