WD Black SN7100 4TB NVMe PCIe Gen4 SSD (OEM) – Western Digital

The Western Digital WD Black SN7100 is a PCIe Gen4 NVMe internal SSD engineered for gaming laptops and handheld gaming devices that demand both speed and power efficiency. Arriving as an OEM unit without retail packaging, this is a fresh, unused drive — an ideal choice for system builders and upgraders who prioritise value without compromising on quality. At the heart of the SN7100 is Western Digital's next-generation TLC 3D NAND, paired with a DRAM-less architecture that has been tuned for improved power efficiency compared to the previous SN770 generation. The M.2 2280 form factor ensures broad compatibility across modern laptops, gaming handhelds, and desktop motherboards that feature an M.2 PCIe Gen4 slot. With the 4TB capacity, the SN7100 provides ample room for large game libraries, downloadable content, software installations, and future title updates without the need for secondary storage. The drive also supports the downloadable WD Black Dashboard (Windows only), which lets you monitor drive health, check firmware updates, and activate Game Mode to fine-tune performance for gaming workloads. Endurance is a standout characteristic of this configuration: the 4TB model is rated for up to 2,400TBW (terabytes written), which reflects suitability for sustained write-intensive use cases such as gameplay capture, content creation, and general heavy workloads over an extended period. Verifiable Specifications: - SKU / Model: WDS400T4X0E-00CJA0 - Interface: PCIe Gen4 NVMe (M.2 2280) - Capacity: 4TB - NAND Type: TLC 3D NAND (Western Digital next-generation) - Architecture: DRAM-less - Endurance (4TB model): up to 2,400TBW - Sequential Read Speed (1–2TB models): up to 7,250MB/s* - Sequential Write Speed (1–2TB models): up to 6,900MB/s* - Dashboard Software: WD Black Dashboard (Windows only) - Packaging: OEM — fresh unit, no retail box *Speed ratings of 7,250MB/s read and 6,900MB/s write are sourced for the 1–2TB models. Speeds for the 4TB variant may differ; confirm with Western Digital's official datasheet before publication