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Silver 3.5 inch bare hard drive with circuit board visible

HGST

HGST HUA721050KLA330 500GB 7200 RPM 32MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-BG7W-HXZZ3 MPN HUA721050KLA330

A 500 GB 3.5-inch desktop drive spinning at 7200 RPM with 32 MB cache and a SATA 3.0 Gb/s interface

  • Total capacity500 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Flash memory typeHard Drive
  • Rotational speed7,200 RPM
  • 500 GB capacity stores large media libraries and backups
  • 7200 RPM spindle speed delivers faster data access
  • 32 MB cache buffers bursts for smoother performance
  • SATA 3.0 Gb/s interface connects to most desktop motherboards
  • 5 inch form factor fits standard drive bays

Capacity and interface

The HGST Ultrastar A7K1000 HUA721050KLA330 is a 500GB 3.5 inch desktop hard drive with a SATA 3.0Gb/s interface. It spins at 7200 RPM and carries a 32MB cache for everyday storage workloads.

Build integration

The bare drive fits a standard 3.5 inch bay and connects through a SATA data cable plus a SATA power connector from the power supply. Its SATA 3.0Gb/s link works with any motherboard or controller that supports the same interface without extra adapters.

Thermals and acoustics

The 7200 RPM spindle produces typical mechanical noise and heat for a desktop drive of this class. Average latency is 4.17ms, and power draw follows normal 3.5 inch hard drive patterns under load and idle.

How it compares

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

Price $116.99
Typical for this category: the median of 4,938 items is $107.99.
Total capacity 500 GB
Lower than about 80% of the 2,372 comparable items (median 2 TB).
Price per TB $233.98 per TB
Pricier than about 81% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameHitachi GST
Product lineUltrastar A7K1000
Model nameHUA721050KLA330 (0A35770)
Total capacity500 GB
Performance
Rotational speed7,200 RPM
Mean latency4.17 ms
Storage
Flash memory typeHard Drive
Cache memory32 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.45 kg
Package size203 × 152 × 51 mm

Questions about this item

Will the SATA 3.0Gb/s interface become the bottleneck during sustained 7200 RPM transfers?

The SATA 3.0Gb/s link caps sustained throughput below the mechanical maximum, so the interface is the first limit you hit during long sequential reads or writes.

How much noise and heat does the 7200 RPM Ultrastar A7K1000 produce when running continuously?

At 7200 RPM the drive generates noticeable whir and warm exhaust; expect audible seek noise and a case temperature rise that demands decent airflow in a 3.5" bay.

What existing SATA power and data cables are required to install this bare 3.5" drive?

You need a standard SATA data cable and a 15-pin SATA power connector from your PSU; the bare drive ships without cables, brackets or adapters.

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