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Black 3.5 inch SATA hard drive with silver metal casing and visible circuit board

Western Digital

Western Digital WD4001FAEX 4TB 7200 RPM 64MB SATA 3.5" internal hard drive

SKU CH-F97F-XNV4Q MPN WD4001FAEX

4 TB, 7200 RPM desktop drive with 64 MB cache and 4.2 ms latency for high-performance computing

  • 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
  • 4TB capacity stores large media libraries and backups
  • 7200 RPM spindle speed delivers quick data access for demanding workloads
  • 64MB cache buffer smooths burst transfers during intensive tasks
  • SATA 6.0Gb/s interface provides high-throughput connectivity for desktop systems
  • 2ms average latency reduces wait times in power-computing applications

Capacity and interface

The Western Digital WD4001FAEX is a 4TB 3.5-inch desktop hard drive that connects through a SATA 6.0Gb/s interface. It spins at 7200 RPM and includes a 64MB cache to support demanding workloads. The Black series targets power-computing users who need sustained throughput for large files and heavy multitasking.

Installation notes

The bare drive fits any standard 3.5-inch bay and uses the common SATA data and power connectors, so no special cables or brackets are required. Because it is a mechanical drive, handle it by the edges and avoid shocks while the platters are spinning. The only common issue is forgetting to initialise the new volume in the operating system before use.

Sustained load behaviour

Under continuous write or read workloads the dual-processor architecture helps maintain consistent transfer rates rather than throttling after a short burst. Average latency is rated at 4.2ms, which keeps response times predictable during long rendering, backup or database tasks. The rock-solid mechanical architecture is designed to resist vibration-induced performance drops during extended operation.

How it compares

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

Price $302.99
Pricier than about 82% 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 $75.75 per TB
Pricier than about 56% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameWestern Digital
Product lineBlack
Model nameWD4001FAEX
Total capacity4 TB
Recommended useFor Power Computing
Performance
Rotational speed7,200 RPM
Mean latency4.2 ms
Storage
Cache memory64 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight1.36 kg
Package size155 × 117 × 30 mm

Questions about this item

How do I verify the drive is running at 7200 RPM and 4.2 ms latency after installation?

Check the drive's reported RPM and latency values in your system's disk utility or BIOS; they should match the 7200 RPM and 4.2 ms specifications

The packaging is listed as Bare Drive — does that mean I only receive the drive itself without cables or brackets?

Yes, Bare Drive packaging means the 3.5" drive ships alone; you must supply your own SATA data cable, power cable, and any mounting brackets or screws required by your case

I see only the WD4001FAEX 4TB model listed — is this the sole capacity available in this Black series configuration?

The WD4001FAEX model number identifies the 4TB capacity; other capacities carry different model numbers, so this specific drive is offered only in 4TB

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