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Silver 3.5 inch bare hard drive with green circuit board visible

Seagate

Seagate ST3160318AS BarraCuda 7200.12 160GB 7200 RPM 8MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-FGTS-1BKKE MPN ST3160318AS

A 3.5" desktop hard drive with 160GB capacity, 7200 RPM speed and 8MB cache over a SATA 3.0Gb/s interface

  • Total capacity160 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory8 MB

Capacity 160GB

  • 7200 RPM spindle speed enables quick data access
  • 8 MB cache buffer improves burst transfer performance
  • SATA 3.0 Gb/s interface provides broad motherboard compatibility
  • 160 GB capacity suits OS installs and basic storage
  • 5 inch form factor fits standard desktop drive bays

Seagate BarraCuda 7200.12 160GB Desktop Drive

The Seagate BarraCuda 7200.12 ST3160318AS is a 160GB 3.5-inch internal hard drive built for desktop computers. It operates at 7200 RPM with an 8MB cache and connects through a SATA 3.0Gb/s interface. This bare drive suits users replacing a failed drive or adding modest storage to an older system.

SATA 3.0Gb/s Interface Throughput Limit

The SATA 3.0Gb/s interface caps the maximum theoretical transfer rate at 300 MB/s. Real-world sustained speeds will be lower due to the mechanical nature of the drive and protocol overhead. Builders needing the higher bandwidth of SATA 6.0Gb/s should verify their motherboard supports the faster standard before relying on this drive for throughput-sensitive tasks.

160GB Capacity Determines Fit

With 160GB of formatted space, this drive accommodates a lightweight operating system, essential applications and a small collection of documents. It will not hold modern game libraries, large media collections or extensive virtual machines. Buyers who need more storage must select a higher-capacity model.

How it compares

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

Price $44.99
Cheaper than about 82% of the 4,938 comparable items (median $107.99).
Total capacity 160 GB
Lower than about 94% of the 2,372 comparable items (median 2 TB).
Price per TB $281.19 per TB
Pricier than about 83% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineBarraCuda 7200.12
Model nameST3160318AS
Total capacity160 GB
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Cache memory8 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.91 kg
Package size147 × 102 × 25 mm

Other versions of this model

4 more in the same range

Questions about this item

How do I know if the 160 GB capacity is right for my build?

The 160 GB capacity suits a boot drive for a lightweight operating system or as a secondary store for documents and older applications.

What does the 7200 RPM speed actually deliver in daily use?

The 7200 RPM spindle and 4.16 ms average latency give snappy file access and quicker program launches compared with slower desktop drives.

Will the SATA 3.0 Gb/s interface limit performance on a modern motherboard?

The SATA 3.0 Gb/s link caps the maximum transfer rate at 300 MB/s, so the drive cannot saturate a 6 Gb/s port but will still operate normally.

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