WD Black SN850X NVMe SSD 1TB/2TB PCIe 4.0 M.2 2280 Internal Drive
WD Black SN850X NVMe SSD 1TB/2TB PCIe 4.0 M.2 2280 Internal Drive
WD Black SN850X NVMe Gen4 PCIe M.2 Internal SSD – Blazing-Fast Storage for Gaming & Productivity
Unleash the full potential of your desktop, laptop, or PS5 with the Western Digital WD Black SN850X NVMe SSD. Built on PCIe 4.0 x4 technology, this M.2 2280 internal solid state drive delivers sequential read speeds up to 7,300 MB/s and sequential write speeds up to 6,600 MB/s — giving you near-instant load times, smooth multi-tasking, and the headroom to handle the most demanding workloads. Available in 1TB and 2TB capacities, it's the ideal upgrade for gamers, content creators, and power users alike.
Made in Mainland China.
Key Features
- Massive Storage Capacity: Choose 1TB or 2TB to store your entire game library, 4K media projects, and critical files without compromise.
- Next-Gen PCIe 4.0 x4 Speed: The PCIe Gen4 interface (16 GT/s, up to 4 lanes) ensures lightning-fast data transfer — ideal for high-frame-rate gaming and professional workflows.
- Ultra-High IOPS Performance: 1TB model delivers up to 800K / 1,100K IOPS (4KB random read/write); 2TB model pushes up to 1,200K / 1,100K IOPS for even greater responsiveness.
- M.2 2280 Form Factor: The universally compatible M.2 2280 size fits virtually all modern laptops, desktops, and PS5 expansion slots with no adapters needed.
- TLC NAND Flash: High-quality Triple-Level Cell NAND provides an excellent balance of speed, capacity, and endurance.
- Built-In Cache: 1TB model includes 1 GB cache; 2TB model includes 2 GB cache for consistently snappy performance even during intensive tasks.
- Reliable Endurance: Rated for wide operating temperatures (0°C–85°C) and backed by a 1,200 TBW endurance rating, so your data stays safe over the long haul.
- Compact & Lightweight: Slim 2.38 mm height and just 7.5 g weight — adds zero bulk to your build.
Technical Specifications
| Model | WD Black SN850X |
| Interface | PCIe 4.0 x4, NVMe, M.2 2280 |
| Capacities | 1TB / 2TB |
| Max Sequential Read | 7,300 MB/s |
| Max Sequential Write (1TB) | 6,300 MB/s |
| Max Sequential Write (2TB) | 6,600 MB/s |
| 4KB Random Read/Write (1TB) | 800K / 1,100K IOPS |
| 4KB Random Read/Write (2TB) | 1,200K / 1,100K IOPS |
| NAND Type | TLC |
| Cache | 1GB (1TB) / 2GB (2TB) |
| Endurance | 1,200 TBW |
| Operating Temperature | 0°C – 85°C |
| Dimensions | 80 × 22 × 2.38 mm |
| Weight | ~7.5 g |
| Heatsink | Not included |
| Compatible Devices | Desktop, Laptop, PS5 |
Important Notes
- Capacity Display: Formatted capacity shown by your operating system will be slightly lower than the rated capacity due to binary measurement differences (OS uses 1 GB = 1,024 MB vs. manufacturer's 1 GB = 1,000 MB) and formatting overhead.
- Performance Variables: Actual speeds may vary based on host hardware, system configuration, firmware, and workload. Always back up important data regularly.
- Brand Notice: WD Black flash products are manufactured by SanDisk Technologies, Inc. or its affiliates and distributed under license from Western Digital Corporation.
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Frequently Asked Questions
Q: Is the WD Black SN850X NVMe SSD compatible with the PS5?
A: Yes! The WD Black SN850X M.2 2280 NVMe SSD is fully compatible with the PS5's M.2 expansion slot. Simply install it into your PS5's dedicated SSD bay to expand your console storage. Note that the drive does not include a heatsink, so you may want to add a compatible one for optimal thermal performance in the PS5 chassis.
Q: What is the difference between the 1TB and 2TB versions?
A: Both capacities share the same 7,300 MB/s max sequential read speed. The 2TB version offers a higher max sequential write speed (6,600 MB/s vs. 6,300 MB/s for 1TB), greater 4KB random read performance (1,200K vs. 800K IOPS), and a larger 2 GB cache (vs. 1 GB for the 1TB model), making it the better choice for heavy workloads and large game libraries.
Q: Does this SSD require a heatsink?
A: The WD Black SN850X ships without a heatsink (NON-HEATSINK configuration). For most desktop and laptop installations, passive airflow is sufficient. However, if you plan to use it in a thermally restricted environment such as a PS5 or a compact PC case, adding a compatible M.2 heatsink is recommended for sustained peak performance.
Q: What form factor and interface does this SSD use?
A: This SSD uses the M.2 2280 form factor (80 mm long, 22 mm wide) with a PCIe Gen4 x4 NVMe interface. It requires a motherboard, laptop, or console that supports M.2 PCIe Gen4 or Gen3 slots — Gen3 compatibility is available but speeds will be limited to that generation's bandwidth.
Production & Packaging Notice
To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.