Toshiba
Toshiba MK1234GSX 120GB 5400 RPM 8MB SATA 1.5Gb/s 2.5" laptop hard drive
A 2.5-inch SATA laptop hard drive with 120 GB capacity, 5400 RPM speed and 8 MB cache
- PackagingBare Drive
- InterfaceSATA 1.5Gb/s
- Capacity120GB
- NAND Flash Memory TypeHard Drive
- Cache8MB
- Average Seek Time12ms
- 120 GB capacity stores your OS and files
- 5400 RPM spindle speeds up data access
- 8 MB cache smooths read and write bursts
- SATA 1.5 Gb/s interface connects to laptop bays
- 300 000 hour MTTF rating signals long service life
Drive capacity and fit
The Toshiba MK1234GSX is a 120GB 2.5-inch laptop hard drive spinning at 5400 RPM with an 8MB cache. It suits owners of older notebooks or external enclosures that still rely on the SATA 1.5Gb/s interface for storage expansion or replacement.
Build integration
The bare drive slides into any standard 2.5-inch SATA bay and connects through the 1.5Gb/s link without additional adapters. Its mechanical design leaves the system’s faster ports free for solid-state boot drives while adding bulk capacity for archives or backups.
Sustained workload behaviour
Under continuous read or write activity the platters maintain 5400 RPM with an average seek time of 12ms and latency of 5.55ms. The 300,000-hour MTTF rating indicates suitability for long-running tasks such as media libraries or scheduled backups rather than bursty application loads.
Highlights
- 120 GB capacity stores your OS and files
- 5400 RPM spindle speeds up data access
- 8 MB cache smooths read and write bursts
- SATA 1.5 Gb/s interface connects to laptop bays
- 300 000 hour MTTF rating signals long service life
Specifications
| Brand | TOSHIBA |
|---|---|
| Model | MK1234GSX |
| Packaging | Bare Drive |
| Interface | SATA 1.5Gb/s |
| Capacity | 120GB |
| NAND Flash Memory Type | Hard Drive |
| Cache | 8MB |
| Average Seek Time | 12ms |
| Average Latency | 5.55ms |
| RPM | 5400 RPM |
| Features | 300,000 MTTF Hours |
| Form Factor | 2.5" |
| Shipping weight | 0.09 kg |
| Package size | 102 × 70 × 25 mm |
Questions about this item
What sustained throughput can the 5400 RPM platters deliver?
The drive spins at 5400 RPM with a 1.5 Gb/s SATA interface and 8 MB cache, so sequential throughput is limited by the mechanical platters and the 1.5 Gb/s link.
How much heat and noise does the MK1234GSX produce during all-day operation?
The 5400 RPM spindle and 12 ms average seek keep acoustics and thermals low for a 2.5 inch laptop drive, drawing modest power from the SATA bus.
Which SATA host connector and power source must the laptop already provide?
The drive requires a standard SATA 1.5 Gb/s data connector and the matching 5 V SATA power pinout found in any 2.5 inch drive bay.
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