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Bare 3.5 inch hard drive, silver metal casing, circuit board visible underneath

Western Digital

Western Digital WD Black WD4003FZEX 4TB 7200 RPM 64MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-PNA5-V3V21 MPN WD4003FZEX

A 4 TB, 7200 RPM desktop hard drive with 64 MB cache and a SATA 6.0 Gb/s interface

  • Total capacity4 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory64 MB
  • High-performance 7200 RPM desktop drive
  • 4 TB capacity for large storage needs
  • 64 MB cache boosts responsiveness
  • SATA 6.0 Gb/s interface for fast transfers
  • 5-inch form factor fits standard bays

4TB 7200 RPM SATA desktop hard drive

The Western Digital WD Black WD4003FZEX is a 3.5 inch internal hard drive built for desktop computers. It delivers 4TB of storage capacity with a 7200 RPM spindle speed and a 64MB cache. The drive connects via a SATA 6.0Gb/s interface and measures 147.00mm long, 101.60mm wide and 26.10mm high.

Suits high-capacity desktop storage.

This drive suits users who need large amounts of traditional hard drive space for bulk data, media libraries or backups in a desktop system. Builders requiring solid-state speeds or a smaller 2.5 inch form factor should look at alternative drive types.

7200 RPM spindle speed

The 7200 RPM rotational speed is the key specification that determines the drive's sustained transfer rates and access times for desktop workloads. This speed combined with the 64MB cache defines the performance profile for the 4TB capacity.

How it compares

Measured against everything we stock in 3.5-Inch Internal Desktop HDDs, at today’s prices. Recalculated every night.

Price $251.99
Pricier than about 77% of the 4,938 comparable items (median $107.99).
Total capacity 4 TB
Higher than about 70% of the 2,372 comparable items (median 2 TB).
Price per TB $63.00 per TB
Typical for this category: the median of 2,365 items is $62.21 per TB.

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Specifications

Product
Brand nameWD
Product lineBlack
Model nameWD4003FZEX
Total capacity4 TB
Recommended useIdeal for Servers
Performance
Rotational speed7,200 RPM
Storage
Cache memory64 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height26.1 mm
Maximum width101.6 mm
Maximum length147 mm
Shipping weight0.89 kg
Package size146 × 102 × 25 mm

Questions about this item

How long does the 7200 RPM spindle and dual-core processor typically last before replacement?

The 7200 RPM spindle and dual-core processor are built for continuous desktop workloads; Western Digital rates the drive for a 5-year limited warranty period under normal use.

Will the 64 MB cache become a bottleneck during sustained 4 TB writes?

The 64 MB cache handles burst transfers well, but during prolonged sequential writes the 7200 RPM platter speed becomes the limiting factor before cache capacity does.

How much heat and noise does the 3.5-inch 7200 RPM drive produce when running all day?

At 7200 RPM the drive generates typical desktop-class heat and audible seek noise; adequate case airflow keeps temperatures within the 0–60 °C operating range.

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