Western Digital Black SN7100 4TB M.2 NVMe Gen4 SSD

The Western Digital Black SN7100 4TB is a high-capacity internal SSD built on the M.2 2280 form factor and a PCIe 4.0 x4 (NVMe) interface, with the vendor listing sequential read speeds up to 7000 MB/s. It is aimed at gamers, content creators and power users who need a single drive that can hold large game libraries, raw video footage and project files without resorting to slower secondary storage. What you get with this drive – 4TB of usable internal storage in a single-sided M.2 2280 module, so it slots into most desktop motherboards and modern laptops with an M.2 NVMe slot. – PCIe Gen4 x4 NVMe interface, which lets the controller move data far faster than SATA SSDs or older Gen3 NVMe drives when paired with a Gen4-capable system. – Vendor-rated sequential reads up to 7000 MB/s, useful for loading large game worlds, scrubbing high-bitrate video and reducing application launch times. – Western Digital Black branding, the company’s performance line targeted at gaming and enthusiast builds. Typical use cases The SN7100 4TB is well-suited as a primary OS + games drive on a modern PC, a scratch drive for photo and video editing, or a high-capacity upgrade for a PS5-class system or NVMe-equipped laptop where 1TB and 2TB drives fill up quickly. The combination of capacity and Gen4 throughput makes it especially relevant for buyers who would otherwise split workloads across two smaller SSDs. Verifiable specifications – Model: Western Digital Black SN7100 (WDS400T4X0E) – Capacity: 4TB – Form factor: M.2 2280 – Interface: PCIe 4.0 x4, NVMe – Sequential read (vendor-rated): up to 7000 MB/s – Brand line: WD Black What is not specified on this listing The source listing does not publish sequential write speed, random IOPS, endurance (TBW), warranty length or DRAM/HMB configuration. Buyers who need those numbers for a specific workload should cross-check Western Digital’s official product page before purchase. Treat any figure beyond the bullets above as unverified for this SKU. Best for: gamers, video editors and developers who need a single large NVMe drive on a Gen4 platform. Less ideal for: long-term cold archival, where a high-capacity HDD costs less per terabyte, or systems with only SATA or Gen3 M.2 slots, where the Gen4 headroom cannot be used