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Silver rectangular 2.5 inch bare laptop hard drive

Seagate

Seagate ST9500323CS 500GB 5400 RPM 8MB Cache SATA 3.0Gb/s 2.5" laptop hard drive

SKU CH-TNBF-N9PEF

A 2.5" laptop hard drive with 500GB capacity, 5400 RPM speed and 8MB cache over SATA 3.0Gb/s

  • Total capacity500 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Cache memory8 MB
  • Mean latency5.6 ms
  • 500 GB capacity stores large media libraries
  • 5400 RPM spindle speed balances performance and power draw
  • 8 MB cache accelerates frequent read operations
  • SATA 3.0 Gb/s interface connects to most laptops
  • 5 mm height fits standard 2.5 inch drive bays

500 GB 2.5-inch SATA drive

The Seagate ST9500323CS is a 500 GB laptop internal hard drive with a 5400 RPM spindle and 8 MB cache. It connects through a SATA 3.0Gb/s interface and uses the standard 2.5-inch form factor. The bare-drive packaging makes it suitable for system builders and repair technicians.

Fits 9.5 mm bays with SATA power and data

The drive measures 9.5 mm in height, 69.85 mm in width and 100.35 mm in length, matching the common 2.5-inch notebook bay. It requires a SATA data cable and a SATA power connection from the host system. Using this mechanical drive frees an M.2 slot for a faster solid-state boot device.

Suits storage upgrades and secondary data volumes

This unit suits users who need affordable bulk capacity for documents, media or backups in a laptop or external enclosure. Buyers who want faster application loading or a primary operating-system drive should look at a solid-state alternative.

How it compares

Measured against everything we stock in 2.5-Inch Internal Laptop HDDs, at today’s prices. Recalculated every night.

Price $71.99
Typical for this category: the median of 645 items is $66.99.
Total capacity 500 GB
Higher than about 60% of the 419 comparable items (median 320 GB).
Price per TB $143.98 per TB
Cheaper than about 70% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameSeagate
Model nameST9500323CS
Total capacity500 GB
Performance
Mean latency5.6 ms
Rotational speed5,400 RPM
Storage
Cache memory8 MB
Ports & slots
Interface typeSATA 3.0Gb/s
Size & build
Form factor2.5 in (6.35 cm)
Max height9.5 mm
Maximum width69.85 mm
Maximum length100.35 mm

Questions about this item

How long can the 5400 RPM spindle sustain writes before thermal throttling becomes the limit?

The 5400 RPM motor and 8 MB cache are designed for continuous laptop workloads; the drive operates within its thermal envelope for typical all-day use without a stated throttle point.

What are the noise and heat levels when the drive runs all day in a laptop?

At 5400 RPM the acoustic profile is a low hum and the 9.5 mm z-height keeps heat output modest for a 2.5" bay; no specific dB or watt figures are published.

Which existing laptop connector and bay size are required for the SATA 3.0Gb/s interface and 9.5 mm height?

A standard 2.5" SATA slot with a 9.5 mm drive bay is needed; the drive measures 69.85 mm wide by 100.35 mm long and uses the SATA 3.0Gb/s interface.

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