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Black 3.5 inch SATA hard drive with silver label

Western Digital

Western Digital WD4006FZBX 4TB 7200 RPM 256MB Cache SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-CWEQ-SX63F MPN WD4006FZBX

A 4TB 3.5-inch desktop hard drive with 7200 RPM speed and 256MB cache for gaming and creative workloads

  • Total capacity4 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Flash memory typeHard Drive
  • Recording methodCMR
  • Rotational speed7,200 RPM

Model 4TB 256MB Cache

  • 7200 RPM and 256 MB cache deliver fast desktop performance
  • 4 TB CMR capacity stores large game libraries and media projects
  • StableTrac and Dynamic Cache technology improve reliability under heavy workloads
  • SATA 6.0 Gb/s interface fits standard 3.5-inch drive bays
  • Five-year limited warranty backs long-term use

Capacity and interface

The Western Digital WD4006FZBX is a 4TB 3.5-inch desktop hard drive with a SATA 6.0Gb/s interface and 7200 RPM spindle speed. It uses conventional magnetic recording and carries a 256MB cache buffer for sustained throughput. The drive is built for desktop workloads that benefit from high sequential performance.

Who this suits and who should look elsewhere

Gamers, system builders and creative professionals seeking large-capacity mechanical storage for game libraries, project files or media archives will find the 4TB capacity and CMR technology a good match. Buyers who need a 2.5-inch form factor for laptop bays or who require the low access latency of solid-state storage should consider a different drive type.

The deciding specification

The SATA 6.0Gb/s interface determines motherboard compatibility and maximum interface throughput. Verify that your board provides a free SATA 6.0Gb/s port and that your operating system supports drives larger than 2TB before purchasing.

How it compares

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

Price $185.99
Pricier than about 66% 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 $46.50 per TB
Cheaper than about 64% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWD
Product lineBlack
Model nameWD4006FZBX
Total capacity4 TB
Recommended useGaming Hard Drives
Performance
Rotational speed7,200 RPM
Storage
Flash memory typeHard Drive
Recording methodCMR
Cache memory256 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 weight0.73 kg
Package size203 × 127 × 76 mm

Other versions of this model

5 more in the same range

Questions about this item

Will the 3.5 inch form factor fit my standard desktop drive bay?

The drive measures 147.00 mm long, 101.60 mm wide and 26.10 mm high, matching the standard 3.5 inch desktop bay dimensions.

What cables and mounting hardware do I need to install this SATA drive?

Connect a SATA data cable to the motherboard and a SATA power cable from the PSU; secure the drive using the standard 3.5 inch mounting points in your case.

Does the 256 MB cache or CMR recording technology require any periodic maintenance?

No user maintenance is required; the 256 MB cache and CMR recording technology operate automatically for the life of the drive.

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