Western Digital BLACK SN7100 4TB M.2 2280 PCIe Gen 4.0 7000MB/s SSD

Overview

The Western Digital WDS400T4X0E-00CJA0 is a high-capacity 4TB M.2 2280 solid state drive designed for users who demand fast and reliable storage. It connects via a PCIe Gen 4.0 NVMe interface, delivering up to 7000 MB/s sequential read and 6700 MB/s sequential write speeds. This SSD is well suited for gamers, content creators, and professionals working with large files or data-intensive applications, providing quick load times and efficient data handling.

Key features

• PCIe Gen 4.0 NVMe interface offers high bandwidth for faster data transfers and reduced bottlenecks.
• Large 4TB capacity accommodates extensive game libraries, 4K video projects, and complex datasets.
• DRAM-less architecture reduces power consumption, helping laptops and handheld devices run cooler and extend battery life.
• High endurance rating of 2,400 TBW supports heavy daily workloads such as recording, editing, and software development.
• Up to 900K random read and 1350K random write IOPS improve responsiveness for multitasking and quick access to files.
• Five-year limited warranty provides long-term peace of mind for demanding users.

Key specs

• Capacity: 4TB
• Form factor: M.2 2280
• Interface: PCIe Gen 4.0 NVMe
• Sequential read speed: up to 7000 MB/s
• Sequential write speed: up to 6700 MB/s
• Random read IOPS: up to 900,000
• Random write IOPS: up to 1,350,000
• Endurance: 2,400 TBW
• Warranty: five-year limited

Connectivity and compatibility

This SSD fits into any system with an M.2 2280 slot that supports PCIe Gen 4.0, making it compatible with the latest motherboards and laptops designed for high-speed storage. Its NVMe protocol ensures efficient communication with the host system, maximizing performance for demanding applications.

Performance and reliability

With its TLC 3D NAND technology and high endurance rating, this drive maintains consistent performance even under heavy workloads. The DRAM-less design not only lowers power consumption but also contributes to thermal efficiency, which is especially beneficial for portable devices. This combination ensures the drive remains responsive and durable over time.

Ideal uses and environments

This SSD is a strong choice for PC gamers looking to reduce level load times and store large game libraries. Content creators working with 4K video, high-resolution images, or complex audio projects will find the fast read and write speeds ideal for smooth editing workflows. Developers and researchers benefit from quick data transfers and build times, making it suitable for professional and creative environments that require reliable, high-speed storage.