WESTERN DIGITAL Black SN7100 4TB M.2 Nvme Gen4 Solid State Drive ( SSD )

The Western Digital WD_BLACK SN7100 4TB NVMe SSD (model WDS400T4X0E) is a high-performance PCIe Gen 4.0 M.2 2280 internal solid-state drive built for gamers, content creators, and power users who demand fast storage in a compact form factor. Sitting on the WD_BLACK performance tier, it leverages Western Digital's next-generation TLC 3D NAND flash and a PCIe Gen 4.0 x4 interface to deliver verified sequential read speeds of up to 7,000 MB/s and sequential write speeds of up to 6,700 MB/s for the 4TB capacity. Random performance reaches 900K IOPS read and 1,350K IOPS write, keeping up with demanding workloads such as gameplay streaming, large game library management, and DLC-heavy titles. Designed explicitly for laptops and handheld gaming devices, the SN7100 is a DRAM-less drive that prioritises improved power efficiency over previous-generation WD_BLACK NVMe SSDs, making it well-suited for battery-powered systems. At 4TB capacity you have ample room for large game libraries, future updates, and downloadable content without frequent uninstalls. The 4TB model is rated for 2,400 TBW (terabytes written) of endurance, a substantial figure that supports years of heavy daily use including gameplay capture and streaming. Management is handled through the WD_BLACK Dashboard (Windows only), a free downloadable utility that monitors drive health, tracks performance, applies firmware updates, and enables Game Mode to prioritise SSD resources during gaming sessions. Verified Specifications: - Model: WDS400T4X0E - Capacity: 4TB - Form Factor: M.2 2280 - Interface: PCIe Gen 4.0 x4, NVMe - Sequential Read: 7,000 MB/s - Sequential Write: 6,700 MB/s - Random Read: 900K IOPS - Random Write: 1,350K IOPS - Endurance (TBW): 2,400 TBW (4TB model) - Dimensions: 80 mm × 22 mm × 1.14 mm - Weight: 5.8 g - Operating Temperature: 0°C to 85°C - Non-Operating Temperature: −40°C to 85°C - Warranty: 5-Year Limited - Heatsink: Not included Note: Sequential speeds of up to 7,250 MB/s read and 6,900 MB/s write cited in marketing copy apply to 1–2TB models only. The 4TB variant is specified at 7,000 MB/s read and 6,700 MB/s write per the verified spec table