WD Black Sn850X 4 Tb M.2 Pci

4000 GB, M.2 2280
CHF173.–/1TB
Delivered between Thu, 4.6. and Tue, 9.6.
More than 10 items ordered
free shipping

Product details

The Western Digital Black SN850X 4 TB M.2 PCIe SSD offers high-performance storage for demanding computer applications. This internal solid-state drive utilizes the PCIe 4.0 interface with NVMe 1.4 technology, achieving sequential read speeds of up to 7300 MB/s and sequential write speeds of up to 6600 MB/s for fast data transfer. The 4 TB capacity provides ample storage space for large files, applications, and multimedia content. With a single-sided M.2 2280 form factor measuring 80 mm in length, 22 mm in width, and 2.38 mm in height, it fits into most compatible motherboards and laptops. The drive features a proprietary Western Digital controller and 3D TLC NAND flash memory for consistent performance and reliability. The endurance rating of 2400 TBW (Terabytes Written) supports intensive workloads over extended periods. The included heatsink model helps maintain optimal operating temperatures during prolonged use. This SSD is suitable for gaming systems, content creation workstations, and professional applications that require fast storage access and large capacities. The operating temperature range is between 0 °C and 70 °C, with a weight of approximately 9 g. The product requires a motherboard with an M.2 slot that supports the PCIe 4.0 x4 interface for full performance. As a successor to the SN850 series, it offers backward compatibility with PCIe 3.0 systems at reduced speeds. Installation is straightforward with the included mounting screw, and the drive is pre-formatted for immediate use with most operating systems.

Key specifications

Interface
PCIe
Interface version
PCIe 4.0
Protocol
NVMe
Read transfer speed
7300 MB/s
Write transfer speed
6600 MB/s

General information

Item number
67966767
Manufacturer
WD
Category
SSD
Manufacturer No.
WDS400T2X0E-00BCA0
Release date
3.3.2026

Data storage properties

SSD type
M.2 SSD
Form factor
M.2 2280
Storage capacity
4000 GB
Interface
PCIe
Interface version
PCIe 4.0
Protocol
NVMe
Read transfer speed
7300 MB/s
Write transfer speed
6600 MB/s
Memory type (NAND)
TLC
Storage Cooling
with heatsink
Scope of application
Gaming
Max. TBW
2400 TB

Origin

Country of origin
China

Sustainability

Manufacturer commitment
SBTi

Voluntary climate contribution

CO₂ emissions
3.38 kg
Climate contribution
CHF 0.11

Scope of delivery

Scope of delivery
Mounting screwSSD

Product dimensions

Length
8 cm
Width
2.20 cm
Height
0.24 cm
Weight
9 g

30-day right of return
24 Months Warranty (Bring-in)
2 additional offers

Compare products

Goes with

Reviews & Ratings

Warranty score

How often does a product of this brand in the «SSD» category have a defect within the first 24 months?

Source: Digitec Galaxus
  • 7.Lexar
    0.6 %
  • 11.Emtec
    0.7 %
  • 11.WD
    0.7 %
  • 13.Micron
    0.8 %
  • 13.Patriot
    0.8 %

Warranty case duration

How many working days on average does it take to process a warranty claim from when it arrives at the service centre until it’s back with the customer?

Source: Digitec Galaxus
  • 8.SANDISK
    2 days
  • 8.Synology
    2 days
  • 8.WD
    2 days
  • 15.Corsair
    3 days
  • 15.Lexar
    3 days

Return rate

How often is a product of this brand in the «SSD» category returned?

Source: Digitec Galaxus
  • 8.Samsung
    2 %
  • 11.Emtec
    2.1 %
  • 12.WD
    2.3 %
  • 13.Crucial
    2.4 %
  • 14.SANDISK
    2.7 %
Source: Digitec Galaxus