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SanDisk · PCIe 4.0 · 1000 GB

WD_BLACK 1TB SN7100

M.2 2280 · TLC NAND · Host-Memory-Buffer (HMB)

Performance
72
Perf / price
57
Capacity value
57
Amazon
$189
WD_BLACK 1TB SN7100
View WD_BLACK 1TB SN7100 Gallery in high resolution
$189
Available on Amazon Updated Aug 29, 2026
Performance71.9
Performance / price57.1
Capacity value57.1
$189 on Amazon Add this SSD to a build Compare this SSD SSD table

Written analysis

WD_BLACK 1TB SN7100 at a glance

The WD_BLACK 1TB SN7100 is a 1000 GB M.2 2280 SSD using PCIe 4.0 x4, NVMe 2.0. The controller is WD Polaris 3 A101-000103-A1. Flash type is TLC 218-layer. Cache is listed as Host-Memory-Buffer (HMB).

Rated sequential throughput is 7250 MB/s read and 6900 MB/s write. Random throughput is 1000K read IOPS and 1400K write IOPS. The calculated specification score is 71.9.

Best fit: General storage workloads where compatibility and price matter more than peak transfer rates.

Endurance and thermals

Rated endurance is 600 TBW, or approximately 600 TBW per TB of capacity. The listed warranty is 5 years.

Current value

At $189, the drive costs $189.00 per TB. Performance / price is 57.1 and capacity value is 57.1. Compare these values with nearby drives below; interface generation and headline speed alone do not determine value.

Drive data

Full specifications

Interface, flash, controller, cache, throughput, endurance, power, warranty, and value in one technical sheet.

General

Manufacturer
SanDisk
SSD
WD_BLACK 1TB SN7100
Part number
WDS100T4X0E
Model
WDS100T4X0E
Capacity
1000 GB
Form factor
M.2 2280
Launch price
—
Amazon price
$189
Amazon availability
Available
Price updated
Aug 29, 2026

Performance

Sequential read
7250 MB/s
Sequential write
6900 MB/s
Random read
1000K IOPS
Random write
1400K IOPS

Value

Amazon price
$189
Price / TB
$189.00
Performance / price
57.1
Capacity value
57.1

Hardware & cache

Interface
PCIe 4.0 x4, NVMe 2.0
Interface generation
PCIe 4.0
Controller
WD Polaris 3 A101-000103-A1
NAND
TLC 218-layer
Process
16.0
Cache type
Host-Memory-Buffer (HMB)
DRAM
Host-Memory-Buffer (HMB)
DRAM capacity
64 MB
DRAM speed
2000 MT/s
SLC cache
Dynamic

Durability & power

Endurance
600 TBW
Endurance / TB
600 TBW
Warranty
5 years
Idle power
—
Active power
—

Additional information

Also listed as
1TB SN7100
Color
Black

Amazon

Price history

Nearby performance

Similar SSDs

Drives close to WD_BLACK 1TB SN7100 on calculated specification performance. Open the SSD table to sort, filter, and compare side by side.

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Discussion

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Vendor copy

Amazon listing details

Marketplace feature text kept for reference. Structured specifications above are the source for scores and comparisons.

HIGH-OCTANE GAMING. Experience speeds up to 7,250MB/s read and 6,900MB/s write (1-2TB models), with up to 35% faster performance than previous generation.

PURPOSE-BUILT. Designed for serious on-the-go gamers, with a PCIe Gen4 interface and SANDISK’s next generation TLC 3D NAND.

MORE SPACE FOR FAVORITES AND NEW TITLES. Available in multiple capacities up to 2TB, upgrade to an SSD that gives you tons of storage.

MORE TIME TO CLEAR THAT CHECKPOINT. Built with laptops and handheld gaming devices in mind, with up to 100% more power efficiency over the previous generation.

DO MORE WITH DASHBOARD. Ensure your drive is optimized for prime performance with the downloadable WD_BLACK Dashboard (Windows only).

POWERED BY SANDISK: The WD_BLACK, WD Blue, and WD Green flash products are manufactured by Sandisk Technologies, Inc. or its affiliates and distributed under license from Western Digital Corporation.

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