Product Chart / Ssd drives / WD Black SN850X
WD_BLACK SN850X 4TB NVMe SSD - M.2 2280, Up to 7,300 MB/s Read speeds, Up to 6,300 MB/s write speeds, Gaming Expansion, High Performance Internal Solid State Drive - WDS400T2X0E
For $679.99 on Amazon (As of Jun 29, 2026, 07:56 PST - Details)
Brand Western Digital
Storage 4000 GB
FormM.2
InterfacePCIe
Sequential Read speed7300 MB/s
Sequential Write speed6600 MB/s
Random Read speed1200k IOPS
Random Write speed1100k IOPS

We know 2 variations of the WD Black SN850X with the above specifications:

WD_BLACK SN850X 4TB NVMe SSD - M.2 2280, Up to 7,300 MB/s Read speeds, Up to 6,300 MB/s write speeds, Gaming Expansion, High Performance Internal Solid State Drive - WDS400T2X0E
For $679.99 on Amazon (As of Jun 29, 2026, 07:56 PST - Details)
WD_Black SN850X 4TB NVMe SSD with Heatsink - M.2 2280, Up to 7,300 MB/s Read speeds, Up to 6,300 MB/s Write speeds, Gaming Expansion, High Performance Internal Solid State Drive - WDS400T2XHE
For $599.99 on Amazon (As of Jun 29, 2026, 08:48 PST - Details)
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