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Bare 3.5 inch SATA hard drive, silver metal casing, circuit board visible underneath

Seagate

Seagate Barracuda LP ST31500541AS 1.5TB 5900 RPM 32MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-2PA8-6Z442

Low-power 1.5 TB desktop drive spins at 5900 RPM with 32 MB cache over SATA 3.0 Gb/s

  • Total capacity1.5 TB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Packaging typeBare Drive
  • Rotational speed5,900 RPM
  • Cache memory32 MB
  • 5 TB capacity stores large media libraries
  • 5900 RPM spindle reduces power draw and heat
  • 32 MB cache accelerates frequent file access
  • SATA 3.0 Gb/s interface fits standard desktop ports
  • 1 ms average latency supports responsive reads

Low-power desktop storage

The Seagate Barracuda LP ST31500541AS is a 1.5TB 3.5" internal hard drive built for desktop computers. It spins at 5900 RPM with a 32MB cache and connects through a SATA 3.0Gb/s interface. The drive is supplied as a bare unit and is brand new.

Buyers who want low power draw and quiet operation

This drive suits system builders who prioritise reduced power consumption and cooler running temperatures over peak throughput. It is not suited for buyers who want the fastest possible access times for an operating system or active applications, nor for builds that require higher spindle speeds for sustained workloads.

5900 RPM spindle speed

The 5900 RPM rotation rate is the single specification that decides whether this is the right part. It determines the drive's average latency of 5.1ms and its overall data transfer character, making it a fit for bulk storage where low power use matters more than maximum speed.

How it compares

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

Price $58.99
Cheaper than about 71% of the 4,938 comparable items (median $107.99).
Total capacity 1.5 TB
Lower than about 55% of the 2,372 comparable items (median 2 TB).
Price per TB $39.33 per TB
Cheaper than about 71% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Product lineBarraCuda LP
Model nameST31500541AS
Total capacity1.5 TB
Performance
Rotational speed5,900 RPM
Mean latency5.1 ms
Storage
Cache memory32 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)

Questions about this item

What drive bay size and SATA connectors does the 3.5" 1.5TB Barracuda LP need to fit and mount?

The drive uses a standard 3.5 inch form factor and connects via a SATA 3.0Gb/s data cable plus a SATA power connector from the PSU.

How do you install the ST31500541AS bare drive, and what step is often missed?

Secure the drive in a 3.5 inch bay with four screws, attach the SATA data and power cables, then initialise and format the 1.5TB volume in the operating system before use.

What maintenance or replacement will the 5900 RPM 32MB cache mechanism need later?

No scheduled maintenance is required; monitor SMART health attributes and replace the drive if reallocated sectors or seek errors begin to rise.

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