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Silver 3.5-inch bare hard drive with circuit board visible

Seagate

Seagate BarraCuda 7200.11 ST31000333AS 1TB 7200 RPM 32MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-Q7WD-CTCX4 MPN ST31000333AS

A 1 TB desktop hard drive spinning at 7200 RPM with 32 MB cache and a SATA 3.0Gb/s interface

  • Total capacity1 TB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed7,200 RPM
  • Cache memory32 MB
  • 1 TB capacity stores large media libraries
  • 7200 RPM spindle speed enables quick file access
  • 32 MB cache buffers frequent read and write operations
  • SATA 3.0 Gb/s interface connects to standard desktop motherboards
  • 5 inch form factor fits typical drive bays

BarraCuda 7200.11 1TB desktop drive

The Seagate BarraCuda 7200.11 ST31000333AS is a 1TB 3.5-inch internal hard drive built for desktop computers. It spins at 7200 RPM with a 32MB cache and connects through a SATA 3.0Gb/s interface. The drive arrives as a bare unit without cables or mounting hardware.

SATA 3.0Gb/s integration and build space

Installation requires a standard 3.5-inch drive bay and a SATA data cable plus power connector from the power supply. The SATA 3.0Gb/s link works with any motherboard or controller that supports the interface. Using this mechanical drive for bulk storage leaves faster solid-state slots free for the operating system and applications.

Suited for high-capacity secondary storage

This drive suits builders who need a terabyte of affordable space for media libraries, backups or archival files. It is not for systems that require the low latency and high throughput of solid-state storage. Buyers who want faster boot and load times should look at solid-state alternatives. Those needing more than 1TB on a single drive will need 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 $78.99
Cheaper than about 59% 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 $78.99 per TB
Pricier than about 57% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineBarraCuda 7200.11
Model nameST31000333AS
Total capacity1 TB
Performance
Rotational speed7,200 RPM
Mean latency4.16 ms
Storage
Cache memory32 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Shipping weight0.66 kg
Package size147 × 102 × 25 mm

Questions about this item

What sustained throughput can I expect from the SATA 3.0Gb/s interface on this ST31000333AS?

The SATA 3.0Gb/s link caps theoretical throughput at 3.0 Gb/s, so real-world sustained transfers will sit below that ceiling.

How much heat and noise does the 7200 RPM mechanism produce during all-day operation?

A 7200 RPM 3.5" drive generates noticeable warmth and audible seek noise under continuous load; ensure your case has adequate airflow.

Which power and data cables must I already have to install this bare 3.5" SATA drive?

You need a standard SATA data cable and a SATA power connector from your PSU; no adapter is required for the 3.5" form factor.

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