SAMSUNG
SAMSUNG ST640LM001 640GB 5400 RPM 2.5" laptop hard drive
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
- PackagingBare Drive
- InterfaceSATA 3.0Gb/s
- Capacity640GB
- Cache8MB
- Average Seek Time12ms
- Average Latency5.6ms
- 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.
Highlights
- 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
Specifications
| Brand | SAMSUNG |
|---|---|
| Series | Spinpoint M8 |
| Model | ST640LM001/HN-M640MBB |
| Packaging | Bare Drive |
| Interface | SATA 3.0Gb/s |
| Capacity | 640GB |
| Cache | 8MB |
| Average Seek Time | 12ms |
| Average Latency | 5.6ms |
| RPM | 5400 RPM |
| Features | SATA Native Command Queuing Feature ATA Security Mode Feature Set ATA S.M.A.R.T. Feature Set TuMR/PMR head with FOD technology SilentSeek Serial ATA 3.0Gbps Interface Support NoiseGuard Load/Unload Head Technology |
| Form Factor | 2.5" |
| Height (maximum) | 9.5 +/- 0.2mm |
| Width (maximum) | 69.75 +/- 0.25mm |
| Length (maximum) | 100.3 +/- 0.4mm |
| Shipping weight | 0.14 kg |
| Package size | 107 × 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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