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Western Digital Black SN850X 4TB PCI-Express 4.0 x4 NVMe 3D NAND TLC M.2 2280 Solid State Drive (SSD) - WDS400T2X0E

Western Digital Black SN850X 4TB PCI-Express 4.0 x4 NVMe 3D NAND TLC M.2 2280 Solid State Drive (SSD) - WDS400T2X0E

Part Number: WDS400T2X0E
Manufacturer: Western Digital

Condition: New

Weight: 3.0 lbs

Availability: In stock

Regular price $1,042.34
Regular price Sale price $1,042.34
Shipping calculated at checkout.
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WD Black SN850X 4TB NVMe PCIe 4.0 M.2 2280 SSD — WDS400T2X0E

The WD Black SN850X (WDS400T2X0E) is a 4TB PCIe 4.0 NVMe M.2 2280 solid state drive for gamers and creators who demand both speed and massive capacity. Built on 3D TLC NAND with WD's proprietary controller and GameMode 2.0 technology, it delivers sequential read speeds up to 7,300 MB/s with 4TB of storage — enough for an extensive game library, large media projects, and demanding workloads without compromise.

Key Specifications

  • Part Number / MPN: WDS400T2X0E
  • Manufacturer: Western Digital (WD)
  • Product Line: WD Black SN850X
  • Capacity: 4TB
  • Interface: PCIe 4.0 x4, NVMe 1.4
  • Form Factor: M.2 2280
  • NAND Type: 3D TLC NAND
  • DRAM Cache: Yes
  • Heatsink: No

Performance

  • Sequential Read: Up to 7,300 MB/s
  • Sequential Write: Up to 6,600 MB/s
  • Random Read (4K): Up to 1,200,000 IOPS
  • Random Write (4K): Up to 1,100,000 IOPS
  • GameMode 2.0: Adaptive thermal and cache optimization for sustained gaming performance

Reliability & Endurance

  • TBW: 2,400 TBW
  • MTBF: 1,750,000 hours
  • Warranty: 5 years limited
  • RoHS compliant

Features

  • PCIe 4.0 x4 — up to 2x faster than PCIe 3.0 NVMe
  • GameMode 2.0 for optimized gaming performance
  • WD Dashboard software for health monitoring and firmware updates
  • Backward compatible with PCIe 3.0 systems

Physical & Environmental

  • Form Factor: M.2 2280 (22mm x 80mm)
  • Interface Key: M-key (PCIe/NVMe)
  • Operating Temperature: 0°C to 70°C
  • Storage Temperature: -40°C to 85°C
  • Operating Voltage: 3.3V

Compatibility

  • Compatible with M.2 PCIe 4.0 or PCIe 3.0 slots (M-key)
  • Compatible with PlayStation 5 (PS5) M.2 expansion slot
  • Intel 12th Gen+ and AMD Ryzen 5000/7000 for full PCIe 4.0 speeds
  • Compatible with Windows 10/11 and Linux
  • Not compatible with SATA-only M.2 slots

Frequently Asked Questions

Why do I see an incorrect image for this item?

Images may be representative of the product model. For Refurbished items, the actual unit may differ in appearance from the image shown.

Specifications, part number, condition and included accessories are stated on this page.

What do you mean by term Refurbished?

Refurbished means a used computer part or device that has been cleaned, checked, and repaired to make sure it works properly again. Unlike regular second-hand items, refurbished products go through testing and fixing so they can perform like new.

How many days does it take to ship goods to customers?

All orders are processed within 1-2 business days. Orders placed on weekends or public holidays will be processed on the next business day. For more info visit shipping policy.

What is your return policy?

We offer a 30-day return policy subject to the terms and conditions described in our Refund Policy. Restocking fees may apply to eligible non-faulty returns. Kindly take a look at our Return Policy page.

Do you deliver my ordered items in their original retail box?

For Brand New items, you will receive them in their original retail box. For Refurbished items, you will receive them in a Brown Box or Bulk Packaging.

Do your printers come with ink cartridges?

Refurbished printers do not come with ink cartridges or toners.