The Western Digital WD Blue SN5100 delivers 4TB of PCIe 4.0 NVMe storage, achieving sequential read speeds up to 6,900 MB/s to accelerate game loads and large file transfers.

Massive 4TB Capacity for Growing Libraries

Modern game installs and high-resolution video projects demand immense local storage. The 4TB capacity of the SN5100 provides ample room for expanding media archives, software libraries, and creative assets on a single M.2 2280 drive. It serves as an ideal secondary drive for enthusiast builds or a spacious primary drive for mainstream users who value capacity alongside high bandwidth.

Near-Max PCIe 4.0 Speeds at 6,900 MB/s

Operating on the PCIe 4.0 x4 interface, this drive maximises the bandwidth of the Gen4 standard. It significantly reduces load times compared to older hardware, ensuring quick asset streaming when navigating complex applications or open-world games. Random performance is equally robust, maintaining snappy system responsiveness even under heavy multitasking loads.

Efficient Polaris 3 Controller and QLC Architecture

The SN5100 utilises Western Digital’s Polaris 3 controller paired with SanDisk QLC 3D CBA NAND. This architecture omits a dedicated DRAM cache to reduce power consumption and physical complexity, instead relying on Host Memory Buffer (HMB) technology. HMB borrows a small fraction of system RAM to manage the drive’s mapping tables, allowing the SSD to maintain high burst performance and rapid random access without the cost or thermal output of onboard DRAM.

Slim Form Factor and Broad Compatibility

Measuring 80 x 22 x 2.38 mm and weighing just 5.7 grams, the standard M.2 2280 form factor fits easily into desktop motherboards and compatible laptops. The drive operates safely at temperatures up to 85°C, ensuring stable performance during sustained data transfers even when installed under low-profile motherboard heatsinks or inside tightly packed mobile chassis.

1,200 TBW Endurance and 5-Year Reliability

High-capacity QLC drives require robust endurance ratings to handle daily data cycling. The 4TB SN5100 is rated for 1,200 Terabytes Written (TBW), providing long-term reliability for users frequently downloading games or saving large project files. Backed by a Mean Time Between Failures (MTBF) of 1,750,000 hours and a 5-year limited warranty, the drive is engineered for sustained operational stability across its lifespan.