Seagate
Seagate Momentus 7200.2 ST9200420AS 200GB 7200 RPM 16MB SATA 3.0Gb/s 2.5" laptop hard drive
A 200GB 2.5" laptop hard drive with 7200 RPM, 16MB cache and SATA 3.0Gb/s interface
- PackagingBare Drive
- InterfaceSATA 3.0Gb/s
- Capacity200GB
- Cache16MB
- Average Latency4.17ms
- RPM7200 RPM
- 7200 RPM spindle speed for fast data access
- 16 MB cache buffer improves burst transfer performance
- SATA 3.0 Gb/s interface enables straightforward laptop installation
- 200 GB capacity stores operating system and applications
- 5 inch form factor fits standard notebook drive bays
Capacity and interface
The Seagate Momentus 7200.2 ST9200420AS is a 200GB laptop internal hard drive with a SATA 3.0Gb/s interface. It spins at 7200 RPM and includes a 16MB cache for improved data throughput. The 2.5-inch form factor fits standard notebook drive bays and it is supplied as a bare drive.
Suitable upgrades and limitations
This drive suits owners of older laptops that require a SATA 3.0Gb/s replacement or a modest capacity boost. It is not for systems that need a larger capacity than 200GB. It is also not for users who require the lower latency or silent operation of solid-state storage.
Deciding specification
The SATA 3.0Gb/s interface is the single specification that determines compatibility. The host laptop must provide a matching SATA connector and support 2.5-inch drives. Without that interface the drive cannot be installed or recognised.
Highlights
- 7200 RPM spindle speed for fast data access
- 16 MB cache buffer improves burst transfer performance
- SATA 3.0 Gb/s interface enables straightforward laptop installation
- 200 GB capacity stores operating system and applications
- 5 inch form factor fits standard notebook drive bays
Specifications
| Brand | Seagate |
|---|---|
| Series | Momentus 7200.2 |
| Model | ST9200420AS |
| Packaging | Bare Drive |
| Interface | SATA 3.0Gb/s |
| Capacity | 200GB |
| Cache | 16MB |
| Average Latency | 4.17ms |
| RPM | 7200 RPM |
| Form Factor | 2.5" |
| Shipping weight | 0.09 kg |
| Package size | 102 × 76 × 13 mm |
Questions about this item
What is the spindle speed that determines the drive's sustained throughput limit?
The drive spins at 7200 RPM, which sets the mechanical ceiling for continuous read and write performance.
How much power does the 7200 RPM mechanism draw and what heat or noise should be expected during all-day operation?
A 2.5" 7200 RPM SATA drive typically draws 2–3 W idle and 4–5 W under load, producing modest warmth and audible seek noise in a quiet laptop.
Which laptop drive bay and cable standard must the system already provide for this drive to install and function?
The drive requires a standard 2.5" SATA drive bay and a SATA 3.0Gb/s data and power connection.
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