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Silver 3.5 inch internal hard drive with SATA connectors and circuit board visible

Seagate Refurbished

Seagate ST3320413CS 320GB 5900 RPM 16MB SATA 3.0Gb/s 3.5" internal hard drive

SKU CH-880Q-3JXJ5 MPN ST3320413CS

A refurbished 3.5" SATA drive with 320GB capacity, 5900 RPM speed and 16MB cache for desktop storage

  • Total capacity320 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor3.5 in (8.89 cm)
  • Rotational speed5,900 RPM
  • Cache memory16 MB
  • Average seek time14 ms
  • 320 GB capacity stores everyday files and backups
  • 5900 RPM spindle speed keeps daily computing responsive
  • 16 MB cache buffers frequent read and write operations
  • SATA 3.0 Gb/s interface connects to standard desktop motherboards
  • 5 inch form factor fits regular drive bays

Capacity and interface

This 320GB Seagate drive connects over a SATA 3.0Gb/s interface and fits a standard 3.5-inch bay. It is intended for everyday desktop storage such as operating system files, documents and media libraries. The refurbished unit carries a 16MB cache and a 5900 RPM spindle speed. Buyers who need higher capacities or faster transfer rates should consider other models.

Thermals noise and power

At 5900 RPM the mechanism runs cooler and quieter than faster desktop drives, making it suitable for systems where low acoustic output is valued. The 16MB buffer helps smooth routine read and write requests during normal office or home workloads. Average seek time is 14ms and average latency is 5.1ms under typical conditions. No specific power-draw figures are supplied for this model.

Sustained workload behaviour

Under continuous operation the drive maintains its rated 5900 RPM speed with an average write time of 15ms. The 14ms seek time and 5.1ms latency remain consistent during extended file transfers or backup jobs. Users who require sustained throughput for video editing or database work may find the performance ceiling limiting. The physical dimensions are 146.99mm long, 101.85mm wide and 20.20mm high.

How it compares

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

Price $38.99
Cheaper than about 87% of the 4,938 comparable items (median $107.99).
Total capacity 320 GB
Lower than about 87% of the 2,372 comparable items (median 2 TB).
Price per TB $121.84 per TB
Pricier than about 68% of the 2,365 comparable items (median $62.21 per TB).

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Specifications

Product
Brand nameSeagate
Model nameST3320413CS
Total capacity320 GB
Recommended useFor Daily Computing
Performance
Rotational speed5,900 RPM
Average seek time14 ms
Mean write time15 ms
Mean latency5.1 ms
Storage
Cache memory16 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor3.5 in (8.89 cm)
Max height20.2 mm
Maximum width101.85 mm
Maximum length146.99 mm
Shipping weight0.43 kg
Package size152 × 108 × 24 mm

Questions about this item

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

Mount the drive using the 101.85 mm width and 146.99 mm length screw holes, connect the SATA 3.0 Gb/s data cable and power connector, then initialise and format the 320 GB volume in the operating system — the step most people skip is partitioning and formatting before use

What maintenance or replacement will this refurbished ST3320413CS need later?

As a mechanical drive with a 5900 RPM spindle, the bearings and motor may wear over time; no user-serviceable parts exist, so plan to replace the entire unit if noise increases or SMART attributes report reallocated sectors

What limit appears first during sustained writes on this 16 MB cache model?

The 15 ms average write latency and 5900 RPM rotation constrain sustained transfer rates, so the mechanical write speed becomes the bottleneck before the SATA 3.0 Gb/s interface saturates

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