Western Digital 4TB WD Black

Brand: Western Digital
Model: 4TB WD Black

$247–$273estimated range · from catalog price Jun 22, 2026

WD Black 4TB (WD4005FZBX) 3.5-inch 7200RPM SATA HDD with 256MB cache, launched Feb 23, 2018; ideal for desktop game libraries and bulk storage.

Storage performance rankTop 63% of storage drives

TierBudget?

ReleasedFeb 2018

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Capacity4 TB

TypeHDD

InterfaceSATA

Read speed256 MB/s

Form factor3.5

GixCore Editorial

Product overview

Released on February 23, 2018, the WD Black 4TB (WD4005FZBX) is a 3.5-inch, 7200‑RPM SATA 6 Gb/s member of Western Digital’s WD_BLACK desktop HDD line, the FZBX refresh that doubled cache to 256 MB; WD’s spec sheet rates the 4TB model around 202 MB/s sustained transfers.

In today’s storage landscape it’s a budget-tier option aimed at affordable bulk capacity—why it exists is to hold large game libraries and files cheaper than SSDs, backed by a 5‑year warranty. It’s best used as a secondary “game library” or general mass‑storage drive in a desktop with 3.5-inch bays; use an SSD for your OS and heavy scratch work. As of 2026 it remains listed by WD (not discontinued). Unique note: 256 MB DRAM cache with StableTrac/Dynamic Cache tech.

Best for

game library
mass storage
budget upgrade

Official product specifications

Specifications

At a glance iEach dot represents a catalog model. Farther right means a higher measured value, not necessarily a better fit.Measured against the storage drives catalog

Current modelCatalog models

Capacity4 TB