This article covers Western Digital ウエスタンデジタル 内蔵SSD 1TB WD Black SN7100 (読取り最大 7.

Overview

The Western Digital WD Black SN7100 is a high-performance PCIe Gen4×4 M.2 NVMe SSD. This 3-pack bundles three 1TB drives, making it an excellent choice for gamers, content creators, and users who need to upgrade multiple systems simultaneously. Sequential read speeds reach up to 7,250 MB/s, with writes up to 6,900 MB/s, placing it in the upper mid-range of Gen4 SSDs. Random IOPS are also impressive at 1,000K read and 1,400K write. Priced competitively, the 3-pack often offers a lower per-drive cost compared to buying three individual units. It's a practical solution for building a RAID array or outfitting multiple PCs without the hassle of separate purchases.

Compatibility Guide

The WD Black SN7100 uses the M.2 2280 form factor and requires a PCIe 4.0 x4 slot for maximum performance. It is backward compatible with PCIe 3.0 slots, but speeds will be limited to around 3,500 MB/s. Interface: NVMe 1.4, PCIe 4.0 x4 (backward compatible with Gen3) Form Factor: M.2 2280 OS Compatibility: Windows 10/11, macOS, Linux Important: Check that your motherboard's M.2 slot supports PCIe 4.0. Some motherboards have shared bandwidth with SATA ports or other M.2 slots. Also, the drive is single-sided, so it should fit most systems without thickness issues.

Product Info

The SN7100 is part of WD's Black series, aimed at gaming and high-performance computing. It uses 3D TLC NAND and a custom WD controller. Unlike some competitors, it does not have a dedicated DRAM cache; instead, it relies on Host Memory Buffer (HMB) technology to use system RAM as cache. This keeps costs lower while still delivering excellent real-world performance. Release: 2024 (3-pack available from 2025) Warranty: 5 years * Market Position: Upper mid-range, competing with Samsung 990 Pro and Seagate FireCuda 530. The 3-pack offers excellent value for multi-drive setups.

Best Use Cases

Gamers needing extra capacity: With modern games exceeding 100GB, a single 1TB drive fills up quickly. Three drives allow you to install a large game library, or use RAID0 for even faster load times (requires motherboard RAID support). Content creators and video editors: 4K/8K video projects benefit from fast NVMe storage. Use one drive for OS/apps, one for active project files, and one for cache/scratch disk. Users with multiple PCs: Ideal for building a main rig, a backup station, and a media server all at once, saving both time and money compared to buying singles. Not recommended for: Users who only need one drive, or those with older PCIe Gen3 systems who won't see the full speed benefit. ## Alternatives
Samsung 990 Pro 1TB: Slightly faster sequential reads (7,450 MB/s) and similar random performance, but typically more expensive. Some users have reported firmware issues. Seagate FireCuda 530 1TB: Offers higher endurance (1,275 TBW vs 600 TBW) and similar speeds, but at a higher price point. Better for write-heavy workloads. The SN7100 strikes a good balance between performance and price, especially in the 3-pack configuration.

Things to Consider

The 3-pack means you are buying three drives at once. If you only need one, purchasing a single unit is more sensible. The drive is DRAM-less, so under sustained heavy write loads (e.g., server database), performance may drop compared to DRAM-equipped SSDs. For typical gaming and desktop use, this is not a concern. Also, ensure your motherboard supports PCIe 4.0 to get the full speed. Using it in a Gen3 slot cuts performance roughly in half. The 5-year warranty is standard, but note the TBW limit of 600 TBW for the 1TB model – exceeding this voids the warranty. With normal usage, this is unlikely to be an issue. ## FAQ Q: Can I use this SSD in a PlayStation 5? A: Yes, it meets PS5's requirements for M.2 expansion. However, you will need to install a separate heatsink as the drive does not come with one. Q: Is the 3-pack cheaper than buying three singles? A: Typically, yes. The per-unit price is usually lower, but always compare current prices as sales may affect individual drives. Q: Can I use RAID0 with these three drives? A: Yes, if your motherboard supports RAID. Theoretical sequential speeds could exceed 14,000 MB/s, but RAID0 offers no redundancy – a single drive failure results in total data loss.

Product Disclosure (Amazon)

  • Manufacturer: WESTERN DIGITAL
  • Brand: ウエスタンデジタル(Western Digital)
  • Seller: Amazon.co.jp
  • Fulfilled by: Amazon.co.jp
  • ASIN: B0H8DK9MYN
  • Note: This article covers a manufacturer-made product based on Amazon listing details.