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Silver 3.5 inch bare hard drive with exposed circuit board

Seagate

Seagate BarraCuda 7200.10 ST3320820AS 320GB 7200 RPM 8MB Cache SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-WFAJ-6J3HX

A 320 GB 3.5-inch desktop hard drive spinning at 7200 RPM with 8 MB cache and a SATA 3.0 Gb/s interface

  • PackagingBare Drive
  • InterfaceSATA 3.0Gb/s
  • Capacity320GB
  • NAND Flash Memory TypeHard Drive
  • RPM7200 RPM
  • Cache8MB
  • 320 GB capacity stores large media libraries
  • 7200 RPM spindle speed speeds up file access
  • 8 MB cache buffers bursts for smoother throughput
  • SATA 3.0 Gb/s interface fits standard desktop bays
  • Perpendicular recording technology boosts areal density and reliability

Desktop storage for everyday computing

This Seagate BarraCuda 7200.10 drive provides 320GB of internal storage for desktop PCs. The 3.5 inch form factor fits standard drive bays and the SATA 3.0Gb/s interface connects directly to compatible motherboards. It suits users adding a secondary drive for documents, media or backup tasks. Builders needing higher capacities or faster interfaces should consider other options.

Thermals noise and power in normal use

The drive spins at 7200 RPM with an average latency of 4.16ms and is described by the manufacturer as whisper-quiet during operation. Perpendicular recording technology helps maintain reliability while the 8MB cache buffers routine read and write requests. No specific power-draw figures are supplied so thermal output under sustained load cannot be quantified.

Included accessories and software impact

The product is supplied as a bare drive without cables, mounting screws or installation software. Enhanced G-Force Protection guards against handling shocks before the drive is mounted. Clean Sweep calibration and Directed Offline scan diagnostics run in the background to maintain data integrity. RoHS compliance confirms restricted substances are limited in the manufacturing process.

Highlights

  • 320 GB capacity stores large media libraries
  • 7200 RPM spindle speed speeds up file access
  • 8 MB cache buffers bursts for smoother throughput
  • SATA 3.0 Gb/s interface fits standard desktop bays
  • Perpendicular recording technology boosts areal density and reliability

Specifications

BrandSeagate
SeriesBarraCuda 7200.10
ModelST3320820AS
PackagingBare Drive
InterfaceSATA 3.0Gb/s
Capacity320GB
NAND Flash Memory TypeHard Drive
RPM7200 RPM
Cache8MB
Average Latency4.16ms
FeaturesPerpendicular recording technology for maximum drive capacity and reliability
Ultra-fast performance
Superb reliability
Whisper-quiet operation
Enhanced G-Force Protection against handling damage
78 MB/s maximum sustained data transfer rate
Clean Sweep calibration and Directed Offline scan diagnostics
RoHS (restriction of hazardous substances) compliant
Form Factor3.5"

Questions about this item

How do I install this 3.5" SATA drive and what step is often missed?

Mount the drive in a 3.5" bay, connect the SATA data cable to a 3.0Gb/s port and attach a SATA power connector; the step often missed is ensuring the motherboard SATA controller is set to AHCI mode in BIOS for full 78 MB/s sustained transfer performance.

What maintenance or replacement will this ST3320820AS need over time?

As a mechanical 7200 RPM drive with perpendicular recording, it requires no scheduled maintenance; plan replacement when SMART attributes report reallocated sectors or when the 4.16ms average latency rises noticeably during sustained workloads.

What limit appears first during sustained use of this 320GB BarraCuda?

The 78 MB/s maximum sustained data transfer rate of the SATA 3.0Gb/s interface becomes the bottleneck before the 8MB cache or 7200 RPM spindle can saturate the bus during large sequential reads or writes.

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