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WD_BLACK SN850X (SANDISK Optimus GX PRO 850X) M.2 NVMe PCIe Gen 4 SSD - 4TB (LIMIT 4)
Part No. WDS400T2X0E
Go Beyond Fast
WD_BLACK SN850X NVMe SSD (4TB)
Premium PCIe 4.0 Performance SSD Engineered for Demanding Creative Workflows and Gaming
Performance, Unleashed
Crush load times and power through demanding workloads with the 4TB WD_BLACK SN850X NVMe SSD. Built with exceptional performance, it delivers read speeds up to 7,300MB/s, helping accelerate everything from modern games to content creation, large file transfers, and data-intensive applications. The downloadable WD_BLACK Dashboard (Windows only) can automatically turn on Game Mode 2.0 features for an optimized gaming experience.
Whether you’re competing online, editing 4K and 8K video, or managing massive project files, the WD_BLACK SN850X NVMe SSD provides the speed, responsiveness, and sustained performance needed to keep you moving forward.
Western Digital & Kingston SSDs Comparison
| Feature | 4TB WD_BLACK SN850X | Kingston NV3 PCIe 4.0 |
|---|---|---|
| Best For | Creative work, demanding workflows, and performance gaming | Everyday storage, productivity, and gaming |
| PCIe Interface | PCIe 4.0 x4 | PCIe 4.0 x4 |
| Maximum Read Speed | Up to 7,300 MB/s* | Up to 6,000 MB/s* |
| Maximum Write Speed | Up to 6,600 MB/s* | Up to 5,000 MB/s* |
| Everyday Productivity | Excellent | Excellent |
| Professional Workflows | Excellent | Very Good |
| Large Media Projects | Excellent | Good |
| Gaming | Excellent | Very Good |
| Peak Speed | Exceptional | Very Good |
| Value | Pro Performance | General Use |
* Performance may vary depending on host device, capacity, configuration, and system conditions.
Key Features & Specifications
- Transform Your Workflow – Get exceptional performance and fast load times for gaming, content creation, and demanding professional applications with speeds up to 7,300 MB/s.
- More Capacity for What Matters – Store more games, media assets, project files, and applications without constantly managing storage space.
- Do More with Dashboard – The downloadable SANDISK Dashboard (Windows only) monitors your drive’s health, and can automatically detect games to turn on Game Mode 2.0.
- Future-forward Features – The WD_BLACK SN850X SSD boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management [ATM](1).
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DirectStorage Support – Improve load times and get precious time back with Microsoft DirectStorage technology.
- Compatibility – Compatible with Mac, Windows, and Linux.
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Form Factor – M.2 2280.
- Interface – PCIe 4.0 x4 NVMe.
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Capacity(2) – 4TB.
- Sequential Read/Write(3) – 7300/6,600 MB/s.
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Endurance [Total Bytes Written] – 1,200TB.
- Operating Temperature – 0°C~70°C.
- Storage Temperature – C-40°C~85°C.
- Dimensions – 80 ±0.2mm x 22 ± 0.15mm x 2.38mm.
- Weight – 7.5 ± 1g.
- Package Contents – WD_BLACK SN850X NVMe SSD (4TB model) retail package.
- Warranty & Support(4) – Limited 5-year warranty and support through SanDisk.
Technical Notes
(1) Requires the downloadable WD_BLACK Dashboard (Windows only).
(2) 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.
(3) Based on read speed, unless otherwise stated. 1 MB/s = 1 million bytes per second. Based on SanDisk internal testing; performance may vary depending upon host device, usage conditions, drive capacity and other factors.
(4) 5 years or Max Endurance (TBW) limit, whichever occurs first. See wdc.com/support for region-specific warranty details.
Note: Computers and accessories featured in photos are not included with the product. Product specifications are subject to change without notice.
Pre-sales Questions?
Contact: sales@sonnettech.com
WARNING: California’s Proposition 65
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