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Silver 2.5 inch laptop hard drive bare drive

SAMSUNG

SAMSUNG ST640LM001 640GB 5400 RPM 2.5" laptop hard drive

SKU CH-M3ZW-AQ98B MPN ST640LM001

A 640 GB 2.5-inch laptop hard drive spinning at 5400 RPM with 8 MB cache and a SATA 3.0 Gb/s interface

  • Total capacity640 GB
  • Interface typeSATA 3.0Gb/s
  • Form factor2.5 in (6.35 cm)
  • Packaging typeBare Drive
  • Cache memory8 MB
  • Average seek time12 ms
  • 640 GB capacity stores large media libraries
  • 5400 RPM spindle delivers quiet everyday performance
  • 8 MB cache speeds up frequent file access
  • SATA 3.0 Gb/s interface fits standard laptop bays
  • 5 mm height matches common 2.5 inch drive slots

Capacity and use case

This 640GB 2.5-inch laptop hard drive operates at 5400 RPM with an 8MB cache. It suits users replacing a failed drive in an older notebook or adding affordable bulk storage for documents and media. The SATA 3.0Gb/s interface fits standard drive bays in machines that still use mechanical storage.

Capacity and headroom

The 640GB capacity holds a typical operating system, applications and a moderate media library with room to spare. Performance is limited by the 5400 RPM spindle speed and 12ms average seek time, so large file transfers and heavy multitasking will feel slower than on solid-state drives.

SATA 3.0Gb/s interface limits

The SATA 3.0Gb/s link caps maximum throughput well below modern SSD speeds. The 9.5mm height fits most laptop bays, but ultra-thin chassis requiring 7mm drives cannot accept this unit. Buyers needing faster boot times or rugged shock resistance should consider solid-state alternatives.

How it compares

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

Price $49.99
Cheaper than about 68% of the 645 comparable items (median $66.99).
Total capacity 640 GB
Higher than about 76% of the 419 comparable items (median 320 GB).
Price per TB $78.11 per TB
Cheaper than about 86% of the 416 comparable items (median $233.48 per TB).

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Specifications

Product
Brand nameSAMSUNG
Product lineSpinpoint M8
Model nameST640LM001/HN-M640MBB
Total capacity640 GB
Performance
Average seek time12 ms
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 +/- 0.2 mm
Maximum width69.75 +/- 0.25 mm
Maximum length100.3 +/- 0.4 mm
Shipping weight0.14 kg
Package size107 × 79 × 13 mm

Questions about this item

Will the SATA 3.0Gb/s interface work with my older laptop that only supports SATA 1.5Gb/s?

Yes, the SATA 3.0Gb/s interface is backwards compatible with SATA 1.5Gb/s controllers, so the drive will function at the older speed.

How can I verify the drive is healthy and performing correctly after installation?

Use the built-in ATA S.M.A.R.T. feature set with any disk utility to monitor health attributes and confirm the 5400 RPM operation.

Does the bare drive packaging include mounting screws or a SATA data cable for installation?

No, the bare drive includes only the 2.5" mechanism itself; mounting screws and any required cables must be sourced separately.

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