Western Digital
WD Black SN850X WDS400T2XHE 4 TB Solid State Drive - M.2 2280 Internal - PCI Express NVMe [PCI Express 4.0 x4]
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- SKU:
- 20865966
- MPN:
- wds400t2xhe
- Availability:
- Usually ships the same or next business day. In stock at our CA warehouse.
- Shipping:
- Calculated at Checkout
- Stock Update:
- 10/04/2026 04:26:13 AM PST
Bulk discount rates
Below are the available bulk discount rates for each individual item when you purchase a certain amount
| Buy 2 or above | and pay only $812.57 each 812.57 |
- Stock Update:
- 10/04/2026 04:26:13 AM PST
Frequently bought together:
Description
This item is brand-new, factory sealed.
WD_BLACK SN850X NVMe SSD - 4TB, With HeatsinkBuilt for elite gaming.
Crush load times and slash throttling, lagging, and texture pop-ins with the WD_BLACK SN850X NVMe SSD. Available in capacities of 1TB up to 8TB2, this gaming drive is built for top-tier performance. With 7,300MB/s1 speeds (1TB - 4TB models) and a heatsink option to maintain performance, you can enjoy your favorite games without worrying about lag. Plus, the downloadable WD_BLACK Dashboard (Windows only) can automatically turn on Game Mode 2.0 features. The WD_BLACK SN850X NVMe SSD delivers a smooth, fast experience and the innovations that let you compete at your absolute peak.
Gain the Ultimate Gaming Edge
Insane speeds up to 7,300 MB/s1 (1TB - 4TB models) deliver top-tier performance with ridiculously short load times for the elite gaming experience youve been waiting for.
Heatsink for the Win
All capacities have an optional heatsink version that's not only eye-catching, but also helps your rig maintain peak performance through your most intense gaming sessions.
More Room for More Games
Capacities up to 8TB2 built with Sandisk TLC 3D NAND, means you get to keep more games at the ready and get into the action even faster.
Do more with WD_BLACK Dashboard
The downloadable WD_BLACK Dashboard (Windows only) monitors your drives health, lets you customize your RGB lighting, and, exclusively on the SN850X SSD, enables Game Mode 2.0 to transform your gaming experience.
Disclosures
1. Based on read speed. 1 MB/s = 1 million bytes per second. Based on internal testing; performance may vary depending upon host device, usage conditions, drive capacity, and other factors.
2. 1GB = 1 billion bytes and 1TB = 1 trillion bytes. Actual user capacity may be less depending on operating environment.Capacity
4TBForm Factor
M.2 2280Connector
M.2Sequential Read Performance
7300MB/sSequential Write Performance
6600MB/sRandom Read
1200K IOPSRandom Write
1100K IOPSInterface
PCIe 4.0 x4Endurance (TBW)
2400unitsOperating Temperature
0oC to 85oCNon-Operating Temperature
-40oC to 85oCItem Dimension (L inchxW inchxH inch)
4 x 1 x 1
Weight
1.00lb
Warranty Information
5-Year Limited Warranty
Features
Operating System Compatibility:
Windows 10+
Windows 10+
Compatibility:
PlayStation 5
Device Supported:
PlayStation
Gaming PC
Workstation
Specs
| Physical Characteristics | |
| Form Factor | M.2 2280 |
| Weight (Approximate) | 1.07 oz |
| Length | 3.2" |
| Drive Type | Internal |
| Height | 0.4" |
| Width | 1" |
| Interfaces/Ports | |
| Drive Interface Standard | PCI Express 4.0 x4 |
| Drive Interface | PCI Express NVMe |
| General Information | |
| Brand Name | WD |
| Manufacturer Website Address | http://www.wdc.com |
| Marketing Information | Built for elite gaming. Crush load times and slash throttling, lagging, and texture pop-ins with the WD_BLACK SN850X NVMe™ SSD. Available in capacities of 1TB up to 8TB 2 , this gaming drive is built for top-tier performance. With 7,300MB/s 1 speeds (1TB - 4TB models) and a heatsink option to maintain performance, you can enjoy your favorite games without worrying about lag. Plus, the downloadable WD_BLACK Dashboard (Windows® only) can automatically turn on Game Mode 2.0 features. The WD_BLACK SN850X NVMe™ SSD delivers a smooth, fast experience -and the innovations that let you compete at your absolute peak. Gain the Ultimate Gaming Edge Insane speeds up to 7,300 MB/s (1TB - 4TB models) deliver top-tier performance with ridiculously short load times - for the elite gaming experience you've been waiting for. Heatsink for the Win All capacities have an optional heatsink version that's not only eye-catching, but also helps your rig maintain peak performance through your most intense gaming sessions. More Room for More Games Capacities up to 8TB built with Western Digital TLC 3D NAND, means you get to keep more games at the ready - and get into the action even faster. Do more with WD_BLACK Dashboard The downloadable WD_BLACK Dashboard (Windows® only) monitors your drive's health, lets you customize your RGB lighting, and, exclusively on the SN850X SSD, enables Game Mode 2.0 to transform your gaming experience. Future-forward features The WD_BLACK SN850X SSD boasts a powerful suite of features, including Predictive Loading, Overhead Balancing, and Adaptive Thermal Management. DirectStorage Supported Improve load times and get precious time back with Microsoft DirectStorage technology. |
| Product Type | Solid State Drive |
| Product Name | BLACK SN850X NVMe SSD - 4TB, With Heatsink |
| Manufacturer | Western Digital Corporation |
| Manufacturer Part Number | WDS400T2XHE |
| Product Model | WDS400T2XHE |
| Product Series | SN850X |
| Product Line | Black |
| Drive Performance | |
| Random 4KB Read | 1200000IOPS |
| Maximum Sequential Read | 7.13 GB/s |
| Maximum Sequential Write | 6.45 GB/s |
| Random 4KB Write | 1100000IOPS |
| Endurance (TBW) | 2400 TB |
| Technical Information | |
| Storage Capacity | 4 TB |
| Platform Supported | PC |
Warranty Information
All Items are Brand New, Factory Sealed and come with a standard warranty. [Read our policies]
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WD Black SN850X WDS400T2XHE 4 TB Solid State Drive - M.2 2280 Internal - PCI Express NVMe [PCI Express 4.0 x4]
$825.13