Seagate
Seagate Momentus 5400.2 ST9100824AS 100GB 5400 RPM 8MB Cache SATA 1.5Gb/s 2.5" laptop hard drive
100GB 2.5-inch SATA laptop drive with 5400 RPM, 8MB cache and low power draw for longer battery life
- PackagingBare Drive
- InterfaceSATA 1.5Gb/s
- Capacity100GB
- Cache8MB
- Average Seek Time12.5ms
- Average Write Time14.5ms
- 100GB capacity stores your files and applications
- 5400 RPM speed delivers responsive data access
- 8MB cache improves read and write performance
- Low power consumption extends laptop battery life
- QuietStep and FDB motor reduce noise and vibration
Capacity and interface
The Seagate Momentus 5400.2 ST9100824AS is a 100GB 2.5" laptop internal hard drive with a SATA 1.5Gb/s interface. It spins at 5400 RPM and includes an 8MB cache for everyday notebook workloads. The drive is supplied as a bare unit without cables or brackets.
SATA 1.5Gb/s practical limits
The SATA 1.5Gb/s link caps the maximum external transfer rate at 1.5 Gb/s, so sustained throughput will not exceed that ceiling. Average seek time is 12.5ms, average write time is 14.5ms and average latency is 5.6ms, which defines the random-access performance envelope. Native Command Queuing is supported to optimise command ordering within those constraints.
100GB capacity decides fit
The 100GB capacity determines whether this drive can hold the operating system, applications and user files required for the target laptop. Buyers who need more storage for large media libraries or multiple virtual machines will find the space insufficient. The 5400 RPM spindle speed and low power draw of 2.2W seek and 0.28W standby suit battery-powered use but do not expand the available capacity.
Highlights
- 100GB capacity stores your files and applications
- 5400 RPM speed delivers responsive data access
- 8MB cache improves read and write performance
- Low power consumption extends laptop battery life
- QuietStep and FDB motor reduce noise and vibration
Specifications
| Brand | Seagate |
|---|---|
| Series | Momentus 5400.2 |
| Model | ST9100824AS |
| Packaging | Bare Drive |
| Interface | SATA 1.5Gb/s |
| Capacity | 100GB |
| Cache | 8MB |
| Average Seek Time | 12.5ms |
| Average Write Time | 14.5ms |
| Average Latency | 5.6ms |
| RPM | 5400 RPM |
| Features | Native Command Queuing Low power consumption for maximum battery life QuietStep ramp load technology for improved durability and inaudible load and unload acoustics Rugged mobility |
| Form Factor | 2.5" |
| Shipping weight | 0.45 kg |
| Package size | 152 × 102 × 51 mm |
Questions about this item
Should I pick the 100GB Momentus 5400.2 or a larger capacity model?
The ST9100824AS is a single 100GB model in the 5400.2 series. If you need more space you must choose a different drive; this listing only offers the 100GB capacity.
What real-world throughput does the SATA 1.5Gb/s interface give inside a laptop?
The SATA 1.5Gb/s link caps at 150 MB/s, but the 5400 RPM platters and 8MB cache typically deliver sustained reads well below that ceiling in everyday use.
Does the SATA 1.5Gb/s connection limit performance compared with faster SATA versions?
Yes, the 1.5Gb/s interface tops out at 150 MB/s, so even if the drive could go faster the bus would hold it back.
New to this? Paying with USDT: TRC-20 or ERC-20 — what to check, what it costs to pay, and what is never asked for.
Also in this aisle
People compared these
Same shelf, same checkout — eight coins and a 30-minute rate lock.
