What are the sequential read and write speeds of the WD Black SN850X 4TB with heatsink?

The drive achieves sequential read speeds up to 7300 MB/s and sequential write speeds up to 6600 MB/s, as specified in the SanDisk datasheet and Farnell listings. These speeds utilize the full PCIe Gen4 x4 bandwidth, ideal for fast game loading and large file transfers in gaming and workstation environments.

What is the endurance rating and MTBF for this SSD?

It features 2400 TBW endurance and 1.75 million hours MTBF, built on Western Digital BiCS5 112-layer TLC 3D NAND. This ensures high reliability for write-heavy workloads, with sources confirming suitability for prolonged use in PCs and PS5.

Does the heatsink help with thermal performance?

Yes, the integrated heatsink maintains peak speeds by dissipating heat, with average power at 7W and max 8.5W under load. Operating temperature is 0°C to 85°C, preventing throttling during intensive gaming or content creation sessions per SanDisk specs.

What interface and form factor does it use?

PCIe Gen4 x4 NVMe 1.4 with M.2 2280 form factor, dimensions 8.80 x 22 x 80 mm, weight 9.0g. Compatible with modern motherboards and PS5, offering straightforward installation for high-bandwidth storage upgrades.

Is it suitable for PS5 storage expansion?

Yes, the 4TB WD Black SN850X with heatsink (WDS400T2XHE) meets PS5 requirements via M.2 2280 and PCIe Gen4, delivering 7300 MB/s reads for quick game loads. Heatsink ensures sustained performance without additional cooling.

What are the random IOPS ratings?

Random read IOPS reach 1,200,000 and random write IOPS 1,100,000, enabling responsive multitasking. These figures from SanDisk datasheet support demanding applications like video editing and virtualization effectively.

WDS400T2XHE - Western Digital WDS400T2XHE 4TB PCIe Gen4x4 M.2 2280 NVMe SSD

Name: Western Digital WDS400T2XHE 4TB PCIe Gen4x4 M.2 2280 NVMe SSD
Brand: Western Digital
SKU: WDS400T2XHE
Price: 892 USD
Availability: InStock

WDS400T2XHE - Western Digital WDS400T2XHE 4TB PCIe Gen4x4 M.2 2280 NVMe SSD | US IT Hardware

Product overview

The Western Digital WD Black SN850X with Heatsink (SKU: WDS400T2XHE) is a 4TB PCIe Gen4 x4 NVMe 1.4 M.2 2280 gaming SSD designed for high-performance computing. It delivers sequential read speeds up to 7300 MB/s and write speeds up to 6600 MB/s, with random read/write IOPS of 1,200,000 and 1,100,000 respectively. Built on Western Digital BiCS5 112-layer TLC 3D NAND, it offers 2400 TBW endurance and 1.75 million hours MTBF. The integrated heatsink maintains performance under load, with average power consumption of 7W and max 8.5W. Operating temperature ranges from 0°C to 85°C, dimensions are 8.80 x 22 x 80 mm, and weight is 9.0g. Compatible with PCIe Gen4 systems, it's ideal for gaming PCs, workstations, and PS5 storage expansion, ensuring low latency and sustained speeds for large file transfers and intensive workloads.

7300 MB/s read, 6600 MB/s write speeds
1.2M read / 1.1M write IOPS performance
2400 TBW endurance, 1.75M hr MTBF
PCIe Gen4 x4 NVMe 1.4 interface
Integrated heatsink, 0-85°C operation
4TB capacity, M.2 2280 form factor

Expedited and overnight shipping options are available at checkout, priced by destination and service.
Purchase orders accepted from qualified institutions.
Refunds within 14 days and replacements within 30 days of delivery with an RMA (25% restocking fee on customer-initiated returns), and every part carries our Standard 30-Day Warranty - see our return policy or contact US IT Hardware.

Featuring

Manufacturer part #	WDS400T2XHE
Brand	Western Digital
Condition	New
Model	WDS400T2XHE
Product Line	WD Black SN850X M.2 with Heatsink
Product Type	Gaming NVMe SSD with Heatsink

Power Consumption

Power Consumption	Average 7W; Maximum 8.5W under load

Physical Characteristics

Form Factor

Compatible systems

PS5 optimized; Windows 10/11; PCs with M.2 2280 PCIe Gen4

Sony PlayStation
Model: PS5
Form factor: M.2 2280
Generation: Current
Officially compatible with optimized heatsink
Any PC
Model: M.2 2280 compatible
Form factor: M.2 2280
Requires PCIe Gen4 x4 slot

Best for

Gaming PCs
Delivers 7300 MB/s read and 6600 MB/s write speeds with 1.2M/1.1M IOPS, minimizing load times and texture pop-ins in demanding games. Integrated heatsink prevents thermal throttling during extended sessions.
Content Creation Workstations
4TB capacity and 2400 TBW endurance support large video files and 3D renders. PCIe Gen4 interface ensures rapid sequential transfers for professional editing workflows.
PS5 Expansion
M.2 2280 form factor with heatsink compatible with PlayStation 5, offering high-speed storage for extensive game libraries without performance degradation.
High-Performance Servers
1.75M hours MTBF and 0-85°C operating range provide reliability in enterprise environments. Low power draw of 7W average suits dense storage configurations.

Endurance TBW	2400 TBW
Random Read IOPS	1,200,000 IOPS
Random Write IOPS	1,100,000 IOPS
Sequential Read Speed	7300 MB/s
Sequential Write Speed	6600 MB/s

NAND Type	Western Digital BiCS5 112-layer TLC
Media Type	3D NAND TLC

Weight	9.0g
Dimensions	8.80 x 22 x 80 mm (H x W x D)

Storage Temperature	-40°C to 85°C
Operating Temperature	0°C to 85°C

Western Digital WDS400T2XHE 4TB PCIe Gen4x4 M.2 2280 NVMe SSD

Product overview

Featuring

Power Consumption

Physical Characteristics

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Reliability

Interface/Ports

Drive Performance

Media & Performance

Weight & Dimensions

Environmental Condition

Frequently asked questions

Western Digital WDS400T2XHE 4TB PCIe Gen4x4 M.2 2280 NVMe SSD

Product overview

Featuring

Power Consumption

Physical Characteristics

Compatible systems

Best for

Details

Shipping, warranty & returns

Customer reviews

Shop these collections

Reliability

Interface/Ports

Drive Performance

Media & Performance

Weight & Dimensions

Environmental Condition

Frequently asked questions