Western Digital

WD BLACK SN8100 HS 4000GB

Brand:: Western Digital
Capacity:: 4TB
Interface:: PCIe NVMe
Heatsink:: Included
Disk Mark Score:: 100725

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Manufacturer: Western Digital Last updated: 2026-09-15

WD BLACK SN8100 HS 4000GB Review

WD BLACK SN8100 HS 4000GB PCIe NVMe M.2 SSD with heatsink, 4TB capacity.

This WD_BLACK SN8100 comes in the heatsinked variant at 4TB. Benchmarked via harddrivebenchmark.net with a DiskMark score of 100725, placing it in the 86th performance percentile.

Specifications

Identity

Brand	Western Digital
Model Number	WD BLACK SN8100 HS 4000GB
Series	WD_BLACK SN8100

Interface and form

Drive Type	Internal
Drive Type	Internal
Bus Interface	PCIe NVMe, M.2
Bus Interface	PCIe 5.0 x4
Protocol	NVMe
Form Factor	M.2 2280

Capacity

Capacity	4000 GB

Sequential performance

Sequential Read	14900 MB/s
Sequential Write	14000 MB/s

Random performance

Random Read IOPS	2300
Random Write IOPS	2400

Controller and cache

Controller	Silicon Motion SM2508
Controller Vendor	Silicon Motion
DRAM Cache	DRAM

NAND

NAND Type	TLC
NAND Vendor	Western Digital
NAND Layers	218

Endurance and reliability

Endurance TBW	2400 TBW

Power and thermals

Heatsink	Included
Heatsink	Yes

Physical and commercial

Warranty	5 years

Capacity Options	4TB
Disk Mark Score	100725
Performance Percentile	86%
Data Source	harddrivebenchmark.net

FAQs

What are the key specifications of the WD BLACK SN8100 HS 4000GB?

The WD BLACK SN8100 HS 4000GB is a component from Western Digital. Key specs: Interface PCIe NVMe, M.2, Capacity Options 4TB, Type Internal, Heatsink Option Included, Disk Mark Score 100725.