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Silver 3.5 inch bare hard drive with circuit board visible

Seagate

Seagate ST1000DM003 1TB 64MB SATA 6.0Gb/s 3.5" internal hard drive

SKU CH-BGHK-5G9FT MPN ST1000DM003

A 1 TB 3.5-inch desktop hard drive with SATA 6.0 Gb/s interface and 64 MB cache

  • Total capacity1 TB
  • Interface typeSATA 6.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Cache memory64 MB
  • Mean latency6Gb/s

Capacity 1TB

  • 1TB capacity for desktop storage
  • 64MB cache speeds up data access
  • SATA 6.0Gb/s interface for fast transfers
  • 5-inch form factor fits standard bays
  • 30 years of Seagate reliability engineering

Desktop storage for everyday workloads

The Seagate ST1000DM003 is a 3.5" internal hard drive with 1TB capacity, 64MB cache and a SATA 6.0Gb/s interface. It suits desktop PCs, all-in-one systems, home servers and entry-level direct-attached storage where large, affordable capacity matters more than peak speed.

Sustained throughput with AcuTrac servo

Seagate AcuTrac servo technology helps maintain consistent tracking during long read and write sessions. The drive uses up to 1.33TB-per-disk technology and delivers an average latency rated at 6Gb/s, so extended file transfers or backup jobs run steadily without the sharp drops seen in burst-only benchmarks.

Standard 3.5" SATA installation

The bare drive measures 146.99mm long, 101.60mm wide and 19.99mm high, fitting any standard 3.5" bay with SATA data and power cables. Units are supplied erased to DoD 5220.22 M standard, unformatted and unpartitioned, so the OS must initialise them; up to 25 bad sectors may be present and cosmetic label variations can occur.

How it compares

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

Price $68.99
Cheaper than about 65% of the 4,938 comparable items (median $107.99).
Total capacity 1 TB
Lower than about 60% of the 2,372 comparable items (median 2 TB).
Price per TB $68.99 per TB
Typical for this category: the median of 2,365 items is $62.21 per TB.

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Specifications

Product
Brand nameSeagate
Product lineDesktop HDD
Model nameST1000DM003
Total capacity1 TB
Performance
Mean latency6Gb/s
Storage
Cache memory64 MB
Ports & slots
Interface typeSATA 6.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height19.99 mm
Maximum width101.6 mm
Maximum length146.99 mm
Shipping weight0.54 kg
Package size152 × 102 × 51 mm

Other versions of this model

5 more in the same range

Questions about this item

How much power does the ST1000DM003 draw during all-day operation?

The 3.5-inch Desktop HDD runs on standard SATA power; idle draw is low and typical for a 1 TB drive, so a normal desktop PSU handles it without extra cables.

What must my system already have to install this bare drive?

You need a free 3.5-inch bay, a SATA data cable, and a SATA power connector from the power supply; the drive ships without cables or brackets.

Will this SATA 6.0Gb/s drive work in a PC that only has SATA 3Gb/s ports?

Yes, the interface is backward compatible and will run at the slower 3Gb/s speed, so older motherboards or controllers can still use the 1 TB capacity.

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