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WD WDS400T2X0E-00BCA0 Black SN850 x 4TB NVMe SSD - M. 2 2280 Internal - PCIe Gen4 x 4 - 7300 MB/s Read
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Product Features
Technical Overview
The SN850X leverages PCIe Gen4 technology to achieve sequential read speeds up to 7300 MB/s and write speeds up to 6600 MB/s. These performance metrics translate to faster game loading, quicker file transfers, and smoother multitasking in resource-intensive applications.
Beyond sequential performance, the drive delivers impressive random I/O capabilities with 1,200,000 IOPS for 4KB reads and 1,100,000 IOPS for 4KB writes. This ensures responsive performance across diverse workloads, from operating system operations to database transactions.
Relevant factors for this section include Storage Capacity, Platform Supported, Maximum Read Transfer Rate, Maximum Write Transfer Rate. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
A strong technical summary explains how the product's interfaces, hardware profile, and operating characteristics work together in real deployment. Buyers often need this context to confirm compatibility with existing devices, expected performance in daily use, and whether installation will be straightforward for IT staff or end users.
Key Product Advantages
The WD Black SN850X combines substantial storage capacity with elite-level performance, creating an ideal solution for users who demand both speed and space. The drive's optimized thermal management maintains consistent performance during extended usage sessions.
These strengths make the product easier to deploy and manage in real environments, especially where reliability, usability, and day-to-day operational continuity matter. Notable benefits include Gaming Performance, Professional Workloads.
Gaming Performance
Reduces game load times and improves level streaming with high sequential and random read speeds.
- 7300 MB/s read speed
- 1.2M IOPS random read
- PS5 compatible
Professional Workloads
Handles large file transfers and content creation tasks efficiently with sustained write performance.
- 6600 MB/s write speed
- 2400 TBW endurance
- Windows 8.1/10/11 compatible
Deployment / Use Cases
This SSD excels in gaming PCs where fast storage directly impacts gameplay experience through reduced loading screens and smoother asset streaming. The 4TB capacity provides ample space for extensive game libraries while maintaining peak performance.
For content creators and professionals, the SN850X accelerates workflow by reducing file transfer times and improving application responsiveness. The drive's compatibility with PlayStation 5 makes it an excellent storage expansion option for console gamers seeking faster load times.
Relevant factors for this section include Storage Capacity, Platform Supported, Maximum Read Transfer Rate, Maximum Write Transfer Rate. When those points are considered together, they give buyers a clearer picture of how the product is equipped, how it fits into deployment, and what kind of day-to-day role it is meant to support.
Gaming PC Builds
Ideal as a primary drive for operating systems and games, or as secondary storage for large game libraries.
Workstation Storage
Suitable for video editing, 3D rendering, and other professional applications requiring fast data access.
Physical Profile
The M.2 2280 form factor measures 80mm in length, 22mm in width, and just 2.38mm in height, allowing installation in compact systems without sacrificing performance. The drive's minimal weight of 7.5 grams makes it suitable for various mounting configurations while maintaining structural integrity.
The physical profile is practical for deployment planning because the dimensions and weight are clearly defined: 93.70 mil (2.38 mm), 0.87" (22 mm), 0.26 oz (7.50 g). This helps confirm rack, shelf, desk, or cabinet fit before installation.
- Width
- 0.87" (22 mm)
- Height
- 93.70 mil (2.38 mm)
- Weight
- 0.26 oz (7.50 g)
- Length
- 3.15" (80 mm)
Highlights
- 4TB storage capacity for extensive game libraries and large media files
- PCIe Gen4 x4 interface delivering 7300 MB/s read and 6600 MB/s write speeds
- M.2 2280 form factor compatible with modern desktop PCs and gaming consoles
- 2400 TBW endurance rating for sustained performance under heavy workloads
- Compatible with PlayStation 5 for expanded console storage
- Windows 8.1, Windows 10, and Windows 11 operating system support
- 1.2M IOPS random read performance for responsive system operations
- 5-year limited warranty for long-term reliability assurance
Specifications
| Specifications | |
|---|---|
| Manufacturer | Western Digital Corporation |
| Manufacturer Part Number | WDS400T2X0E-00BCA0 |
| Brand Name | WD |
| Product Line | Black |
| Product Series | SN850X |
| Product Model | WDS400T2X0E-00BCA0 |
| Product Name | BLACK SN850X NVMe SSD |
| Product Type | Solid State Drive |
| Technical Information | |
| Storage Capacity | 4 TB |
| Platform Supported | PC |
| Drive Performance | |
| Maximum Read Transfer Rate | 7300 MB/s |
| Maximum Write Transfer Rate | 6600 MB/s |
| Random 4KB Read | 1200000IOPS |
| Random 4KB Write | 1100000IOPS |
| Endurance (TBW) | 2400 TB |
| Maximum Sequential Read | 7.13 GB/s |
| Maximum Sequential Write | 6.45 GB/s |
| Network & Communication | |
| Wireless LAN | No |
| Interfaces/Ports | |
| Drive Interface | PCI Express NVMe |
| Drive Interface Standard | PCI Express NVMe x4 |
| Physical Characteristics | |
| Drive Type | Internal |
| Form Factor | M.2 2280 |
| Height | 93.70 mil (2.38 mm) |
| Width | 0.87" (22 mm) |
| Length | 3.15" (80 mm) |
| Weight (Approximate) | 0.26 oz (7.50 g) |
| Miscellaneous | |
| Device Supported | Gaming Console,Desktop PC |
| Compatibility | PlayStation 5 |
| Operating System Compatibility | Windows 8.1,Windows 10,Windows 11 |
| Warranty | |
| Limited Warranty | 5 Year |
User Manual
FAQ
What is the storage capacity of this WD Black SN850X SSD?
This WD Black SN850X SSD offers 4TB of storage capacity, providing substantial space for operating systems, applications, games, and media files. The 4TB capacity allows users to maintain extensive libraries without compromising on the drive's high-performance characteristics.
What interface does this SSD use, and what performance does it deliver?
The SSD utilizes a PCI Express NVMe x4 interface, specifically PCIe Gen4 technology. This interface enables maximum read speeds of 7300 MB/s and maximum write speeds of 6600 MB/s, delivering exceptional performance for gaming, content creation, and professional applications.
What form factor is this SSD, and where can it be installed?
This SSD uses the M.2 2280 form factor, measuring 80mm in length, 22mm in width, and 2.38mm in height. It installs directly into M.2 slots on compatible motherboards in desktop PCs and is also compatible with PlayStation 5 consoles for storage expansion.
What is the endurance rating of this SSD?
The WD Black SN850X has an endurance rating of 2400 TBW (Terabytes Written), indicating the total amount of data that can be written to the drive over its lifespan. This high endurance makes it suitable for sustained workloads and frequent write operations.
Which operating systems are compatible with this SSD?
This SSD is compatible with Windows 8.1, Windows 10, and Windows 11 operating systems. It requires proper driver installation for optimal performance and is designed to work seamlessly with modern Windows environments for both gaming and professional applications.
What warranty coverage does this SSD include?
The WD Black SN850X SSD comes with a 5-year limited warranty from Western Digital. This warranty covers defects in materials and workmanship under normal use conditions, providing long-term reliability assurance for your storage investment.
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