Last November, Western Digital introduced its WD_BLACK SN7100 NVMe SSD series—advertised as utilizing their: "latest TLC 3D NAND." This new SSD design offers: "speeds up to 7,250 MB/s read and 6,900 MB/s write (for 1 and 2 TB models), providing up to a 35% performance boost over our previous generation SSD." The manufacturer's official press material did not explicitly state that the SN7100 would serve as a natural replacement for their well-regarded SN770 (2022) product family, but W1zzard's recent glowing review (of the 2 TB variant) refers back to the forebear on multiple occasions.

As low-key teased by last November's press announcement, a 4 TB WD_BLACK SN7100 model is arriving in 2025—freshly updated listings indicate an imminent launch at retail/e-tail. Interestingly, WD's SN770 range never reached beyond a 2 TB barrier. Search engine results—when inputting the "WDS400T4X0E-00CJA0" identifier—point to a "March 2025" SN7100 series data sheet, and SanDisk's UK store accepting pre-orders for £255.99 (~$332 USD). Availability status is currently designated as: "within 1 week." Western Digital's spec comparison table (see below) proudly showcases the 4 TB variant's impressive endurance (TBW) credential: 2400. Its lower capacity siblings (1 TB and 2 TB) hold slight advantages in terms of read and write speeds. TechPowerUp's resident SSD reviewer deemed the SN7100 2 TB model worthy of an "Editor's Choice" badge, but wished for a larger capacity option. We hope that a 4 TB evaluation sample will make its way to W1zz HQ in the near future.