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Silver rectangular 3.5 inch bare hard drive with exposed circuit board

HGST

HGST Deskstar 7K4000 0F14681 4TB 7200 RPM 64MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-DTFY-8PMM6 MPN 0F14681

4 TB desktop hard drive spins at 7200 RPM with 64 MB cache over SATA 6.0Gb/s

  • 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 responsive file access
  • 64MB cache buffers bursts for smoother throughput
  • SATA 6.0Gb/s interface connects to modern desktop motherboards
  • 5 inch form factor fits standard drive bays

Deskstar 7K4000 4TB desktop storage

The HGST Deskstar 7K4000 delivers 4TB of capacity on a 3.5-inch form factor for daily computing workloads. It spins at 7200 RPM with a 64MB cache to handle general-purpose read and write tasks. The bare-drive packaging suits system builders integrating the drive into a desktop chassis.

SATA 6.0Gb/s interface limits

The drive connects through a SATA 6.0Gb/s interface, which caps sustained throughput well below the speeds of modern solid-state storage. Mechanical latency remains inherent to the 7200 RPM platters, so random access times are higher than flash-based alternatives. The 64MB cache helps buffer bursts but cannot eliminate rotational delay.

Upgrading from smaller mechanical drives

Replacing a lower-capacity 7200 RPM desktop drive with this 4TB model adds space without changing the power or cabling requirements. The jump is worthwhile when a single volume must hold larger media libraries or backups. Users needing faster boot times or application loading should consider solid-state storage instead.

How it compares

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

Price $225.99
Pricier than about 73% 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 $56.50 per TB
Cheaper than about 55% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHitachi GST
Product lineDeskstar 7K4000
Model nameHDS724040ALA640 (0F14681)
Total capacity4 TB
Recommended useFor Daily Computing
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)
Shipping weight0.68 kg
Package size155 × 107 × 30 mm

Questions about this item

Should I choose the 4TB Deskstar 7K4000 or a different capacity for my desktop?

The 4TB model gives you four terabytes of storage in a single 3.5 inch bay, which is the largest capacity offered in the Deskstar 7K4000 series.

What does the 7200 RPM spindle speed mean for everyday use?

The 7200 RPM rotation speed reduces latency when opening files or launching applications compared with slower-spinning drives.

How does the SATA 6.0Gb/s interface limit real-world transfer rates?

The SATA 6.0Gb/s link caps the maximum burst throughput at six gigabits per second, so sustained reads and writes will stay below that ceiling.

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