- Free 30-day Returns
Best Sellers
Meet Your Seller
Make informed decisions with expert advice. Learn More
WD_BLACK 4TB SN850X NVMe Internal Gaming SSD Solid State Drive - Gen4 PCIe, M.2 2280, Up to 7,300 MB/s - WDS400T2X0E
- TRANSFORM YOUR PC. Get top-tier performance and ridiculously short load times for your gaming PC or workstation with insane speeds up to 7,300 MB/s (2)
- MORE ROOM, MORE GAMES. Capacities up to 8TB (1) built with Western Digital TLC 3D NAND, means you get to download more games — and stop deleting your favorites.
- HEATSINK FOR THE WIN. All capacities have an optional heatsink version to help maintain peak performance through your most intense gaming sessions.
- DO MORE WITH DASHBOARD. The downloadable WD_BLACK Dashboard (Windows only) monitors your drive’s health, lets you customize your RGB lighting (heatsink versions only), and can automatically detect games to turn on Game Mode 2.0.
- FUTURE-FORWARD FEATURES. The WD_BLACK SN850X boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management (ATM).
Overview
The Western Digital WD_BLACK SN850X 4TB NVMe Internal SSD is a consumer internal solid state drive for gaming PCs and workstations. Its PCIe 4.0 x4 interface, NVMe protocol, 4TB capacity, and high sequential read and write speeds provide a high-performance storage configuration.
Key Features
- Designed for gaming PC and workstation storage
- 4TB capacity for storing games and files
- 3D NAND TLC memory components
- Predictive Loading, Overhead Balancing, and Adaptive Thermal Management features
Performance
The drive delivers sequential read speeds up to 7,300 MB/s and sequential write speeds up to 6,600 MB/s. 4KB random performance reaches up to 1,200,000 IOPS for reads and 1,100,000 IOPS for writes.
Design
This M.2 2280 internal SSD measures 2.38mm in height, 22.00mm in width, and 80.00mm in depth, with a weight of 7.50g. The listed configuration is without heatsink.
Connectivity & Compatibility
The WD_BLACK SN850X uses a PCI-Express 4.0 x4 interface and NVMe protocol in an M.2 2280 form factor. The downloadable WD_BLACK Dashboard is available for Windows only.
Reliability & Durability
The drive is rated for 2,400TBW and has an MTTF of 1.75M Hours. Operating temperature is 0°C ~ +85°C, and storage temperature is -40°C ~ +85°C. Maximum shock resistance is 1,500G @0.5 ms half sine. Vibration resistance is rated at 5 gRMS, 10-2000 Hz, 3 axes during operation and 4.9 gRMS, 7-800 Hz, 3 axes when non-operating.
Software & Tools
The downloadable WD_BLACK Dashboard for Windows monitors drive health, lets users customize RGB lighting on heatsink versions, and can automatically detect games to turn on Game Mode 2.0.
Specifications
- Brand: Western Digital
- Series: BLACK SN850X NVMe
- Model: WDS400T2X0E
- Device Type: Internal Solid State Drive (SSD)
- Used For: Consumer
- Capacity: 4TB
- Memory Components: 3D NAND TLC
- Interface: PCI-Express 4.0 x4
- Protocol: NVMe
- Max Sequential Read: Up to 7300 MBps
- Max Sequential Write: Up to 6600 MBps
- 4KB Random Read: Up to 1,200,000 IOPS
- 4KB Random Write: Up to 1,100,000 IOPS
- Terabytes Written (TBW): 2400TB
- MTTF: 1.75M Hours
- Heatsink: without Heatsink
- Dimensions: 2.38mm H x 22.00mm W x 80.00mm D
- Weight: 7.50g
Warranty & Returns
Warranty, Returns, And Additional Information
Warranty
- Please contact the Seller directly for warranty information. Warranty information may also be found on the Manufacturer's website.
- Read full details
- CONTACT
Return Policies
- Return for refund within: 30 days
- Return for replacement within: 90 days
- This item is covered by Global Electronic Treasure Store Return Policy
Manufacturer Contact Info
- For a directory of all our manufacturers, please click below.
- Manufacturers Directory


























