This article covers SanDisk 内蔵SSD 4TB WD Blue SN5100 M.2.

Overview

The SanDisk WD Blue SN5100 4TB is an M.2 NVMe internal SSD from the SanDisk brand, part of the Western Digital group. It boasts sequential read speeds up to 6,900MB/s and a massive 4TB capacity. Using QLC 3D CBA NAND with nCache 4.0 technology, it delivers high-speed transfers. The drive supports PCIe Gen4.0 x4 interface, making it ideal for creative workloads and gaming storage. It comes with a 5-year warranty and is officially compatible with PS5.

Compatibility Guide

This SSD uses the M.2 2280 form factor and NVMe protocol with PCIe Gen4.0 x4. It is backward compatible with PCIe Gen3.0 slots, though speed will be limited to Gen3.0 bandwidth. It is officially compatible with PS5 internal storage expansion. For PC builds, ensure your motherboard has an M.2 slot supporting NVMe (PCIe or SATA). The drive lacks an integrated heatsink, so using the motherboard's heatsink or an aftermarket cooler is recommended.

Product Info

The SanDisk WD Blue SN5100 4TB was released in 2024 as a mid-range NVMe SSD. Priced around ¥128,000 for the 4TB variant, it offers competitive value for a high-capacity drive. With sequential reads up to 6,900MB/s and 1,200TBW endurance, it suits heavy workloads like video editing and AI processing. The 5-year warranty and included Acronis True Image cloning software add to its appeal. It sits in the value-high-end segment for professionals needing ample storage at a reasonable cost. * View on

Best Use Cases

Content creators (video editing, 3D rendering) – The combination of 4TB capacity and high read speeds drastically reduces loading times for large project files and RAW footage. PCIe Gen4.0 ensures smooth multitasking with multiple high-resolution assets. PS5 gamers – As a Sony-approved drive, it expands PS5 storage by 4TB, allowing installation of many modern games and benefiting from fast load times. * Data-intensive professionals – For AI model training, database management, or large-scale data analysis, the drive's endurance and capacity provide reliable, high-throughput storage.

Things to Consider

Being a QLC-based SSD, sustained write speeds may drop after the SLC cache is exhausted, especially during large file transfers. It lacks a DRAM cache, which can affect random write performance compared to DRAM-equipped models. The sequential write speed is spec'd at 6,900MB/s per , but actual performance is typically around 5,300MB/s, so don't expect Gen4.0 maximum write throughput. The price of around ¥128,000 is significant, though competitive for 4TB. For users needing absolute top-tier write performance or a Gen5 interface, alternatives like the WD Black SN850X or Samsung 990 Pro may be better, albeit at higher cost. Ensure adequate cooling; the drive can throttle without a heatsink under sustained heavy loads.

Product Disclosure (Amazon)

  • Manufacturer: ウエスタンデジタル(Western Digital)
  • Seller: クラストストア【適格請求書発行事業者】
  • Fulfilled by: クラストストア【適格請求書発行事業者】
  • ASIN: B0G4CK8345
  • Note: This article covers a manufacturer-made product based on Amazon listing details.