
TieDex UK WD_BLACK SN850X NVMe SSD WDS400T2X0E - SSD - 4 TB - PCIe 4.0 x4 (NVMe)
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WD_BLACK SN850X NVMe SSD WDS400T2X0E - SSD - 4 TB - internal - M.2 2280 - PCIe 4.0 x4 (NVMe)
More Room for More Games
Capacities up to 8TB1 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 Management3.DirectStorage Supported
Improve load times and get precious time back with Microsoft® DirectStorage technology.General | |
---|---|
Capacity | 4 TB |
Thermal | Without Heatsink |
compatibility | Windows® 10+ PlayStation®5 (Heatsink model only)4 Computer with M.2 (M-key) port, capable of taking M.2 2280 form factor |
Dimension | 80mm x 22mm x 2.38mm |
Product Weight | 0.0075kgs |
Interface | PCIe Gen4 x4 |
WD_BLACK SN850X 4TB Internal NVMe SSD without Heatsink

Gain the Ultimate Gaming Edge
Insane speeds up to 7,300 MB/s2 (1TB - 4TB models) deliver top-tier performance with ridiculously short load times — for the elite gaming experience you’ve been waiting for.More Room for More Games
Capacities up to 8TB1 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 Management3.DirectStorage Supported
Improve load times and get precious time back with Microsoft® DirectStorage technology.Specifications
General | |
---|---|
Capacity | 4 TB |
Thermal | Without Heatsink |
compatibility | Windows® 10+ PlayStation®5 (Heatsink model only)4 Computer with M.2 (M-key) port, capable of taking M.2 2280 form factor |
Dimension | 80mm x 22mm x 2.38mm |
Product Weight | 0.0075kgs |
Interface | PCIe Gen4 x4 |
Footnotes
Basic Specifications
- Manufacturer's Part Number
- WDS400T2X0E
- EAN
- 0718037891378
- Capacity
- 4 TB
- Model
- WD_BLACK SN850X NVMe SSD WDS400T2X0E
- Interface
- PCIe 4.0 x4 (NVMe)
- Form Factor
- M.2 2280
- Dimensions (WxDxH)
- 22 mm x 80 mm x 2.38 mm
- Manufacturer Warranty
- 5-year warranty
- Type
- Solid state drive - internal
- Weight
- 7.5 g
- Product Description
- WD_BLACK SN850X NVMe SSD WDS400T2X0E - SSD - 4 TB - PCIe 4.0 x4 (NVMe)
Environmental Parameters
- Min Operating Temperature
- 0 °C
- Max Operating Temperature
- 85 °C
- Min Storage Temperature
- -40 °C
- Max Storage Temperature
- 85 °C
General
- Device Type
- Solid state drive - internal
- Capacity
- 4 TB
- Form Factor
- M.2 2280
- Interface
- PCIe 4.0 x4 (NVMe)
- Width
- 22 mm
- Depth
- 80 mm
- Height
- 2.38 mm
- Weight
- 7.5 g
Manufacturer Warranty
- Service & Support
- Limited warranty - 5 years
Performance
- SSD Endurance
- 2400 TB
- Internal Data Rate
- 7300 MBps (read) / 6600 MBps (write)
- 4KB Random Read
- 1200000 IOPS
- 4KB Random Write
- 1100000 IOPS
Expansion & Connectivity
- Interfaces
- 1 x PCI Express 4.0 x4 (NVMe) - M.2 M key
- Compatible Bay
- M.2 2280
Software & System Requirements
- OS Required
- Windows 8.1 / 10 / 11
TieDex UK – European & International Shipping
All European and International orders are dispatched through TieDex Limited.
We ship orders directly to customers via UPS, FedEx, DHL, and Tracked.
Accepted Courier Companies
We only accept the following couriers for international deliveries:
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UPS
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DHL
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FedEx
Important Information
-
Duties & Taxes: Not included in the price. Couriers such as FedEx, DHL, or UPS will email you directly with instructions on how to pay your customs duties and taxes.
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Click & Collect: Not available for international orders.
- Large & Heavy Items: May be delivered on a pallet.
Possible Delivery Delays
Late handling or order delays may occur due to factors outside our control, including but not limited to:
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Payment issues
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Unpaid customs duties or taxes
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Incorrect or incomplete address details
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Seasonal or holiday backlogs
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Severe weather conditions
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Other uncontrollable circumstances
Countries We Ship To
Europe (EU):
Austria, Belgium, Bulgaria, Croatia, the Republic of Cyprus, the Czech Republic, Denmark, Estonia, Finland, France, Germany, Greece, Hungary, Ireland, Italy, Latvia, Lithuania, Luxembourg, Malta, the Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, and Sweden.
Asia, USA, Canada, Mexico, Middle East & Worldwide:
We ship to most major international destinations.