Western Digital WD 2TB WD_Black SN850 NVMe PCIe 4.0 M.2 内蔵ゲームSSD ヒートシンクなし

This article covers Western Digital WD 2TB WD_Black SN850 NVMe PCIe 4.0 M.2 内蔵ゲームSSD ヒートシンクなし.

Overview

The Western Digital WD_Black SN850 2TB is a high-end NVMe SSD built for PCIe 4.0, delivering sequential read speeds up to 7,000MB/s and writes up to 5,100MB/s. This makes it an excellent choice for gamers who want to minimize load times and take full advantage of DirectStorage technology. With 2TB of capacity, you can store a large library of AAA titles without worrying about space. This model comes without a heatsink, so you'll need to use your motherboard's built-in M.2 heatsink or an aftermarket cooler to keep temperatures in check under sustained loads. The WD_BLACK Dashboard software provides firmware updates, performance monitoring, and a dedicated game mode. Positioned firmly in the high-end segment, the SN850 competes directly with the Samsung 990 Pro and Seagate FireCuda 530. It's one of the fastest PCIe 4.0 SSDs available, ideal for enthusiasts who demand top-tier storage performance.

Compatibility Guide

Form factor: M.2 2280, compatible with most desktop motherboards and select laptops that support NVMe drives. Interface: NVMe PCIe 4.0 x4. Backward compatible with PCIe 3.0 slots, but performance will be limited to around 3,500MB/s. OS support: Windows 10/11, Linux. Officially supported as an internal expansion drive for PlayStation 5. Ensure your motherboard has a PCIe 4.0 M.2 slot (Intel 11th-gen or later, AMD B550/X570 or later) to achieve full speeds.

Product Info

Release date: November 2020 (2TB variant: January 2021) Price range: Approximately $200–$280 USD for the 2TB model (varies by retailer and promotions) Warranty: 5 years Power consumption: Idle ~0.1W, active load ~6–8W (no official TDP rating) * Market position: High-end. The 7,000MB/s read speed saturates PCIe 4.0 bandwidth, placing it among the fastest gaming SSDs on the market.

Best Use Cases

PC Gamers: Ideal for DirectStorage-ready titles and large game installations. Load times are dramatically reduced compared to SATA SSDs or PCIe 3.0 drives. Content Creators: Handles 4K/8K video editing, large photo libraries, and 3D rendering projects with ease thanks to high sequential throughput. * PS5 Owners: Works as an official expansion drive, matching the console's internal SSD performance for seamless gameplay.

Things to Consider

The lack of a bundled heatsink means you must provide adequate cooling. High sustained writes can cause thermal throttling without proper heatsinking. If your system only supports PCIe 3.0, you won't see the full speed benefit — consider a cheaper PCIe 3.0 drive instead. Compared to the Samsung 990 Pro, the SN850 has slightly lower random read IOPS, but sequential performance is comparable. Price fluctuations can make the SN850 a better value. The 2TB model offers 600 TBW endurance, which is generous for most users. If you rarely write large amounts of data daily, a 1TB variant might be more cost-effective. ## Alternatives
Samsung 990 Pro 2TB: Slightly faster sequential reads (7,450MB/s) and better random performance, but typically costs more. Seagate FireCuda 530 2TB: Offers 1,275 TBW endurance — nearly double the SN850 — making it a better choice for heavy write workloads. Similar price point. * Both alternatives also require a heatsink and are PCIe 4.0 native. Choose based on your priority: raw speed (990 Pro), endurance (FireCuda 530), or balanced value (SN850).

Product Disclosure (Amazon)

• Manufacturer: WD
• Seller: エリリミット
• Fulfilled by: エリリミット
• ASIN: B08LT9WZVS
• Note: This article covers a manufacturer-made product based on Amazon listing details.