Toshiba's new 1.8" drives are the second generation to benefit from perpendicular recording. In contrast, Hitachi still uses conventional, longitudinal recording technology, which explains the capacity differences: Hitachi can provide 30 GB per 1.8" platter while Toshiba's drives store 40 GB each.
The platter configuration determines the height of both 1.8" drive products: if two platters are used, both models have a height of 8 mm (0.315"), while the single-platter versions get by with a height of only 5 mm (0.197"). Toshiba offers its drives with a Micro-ATA interface or using the CE-compliant Zero Insertion Force (ZIF) connector. Hitachi decided to implement either the full Mini-ATA connector, which is used by all 2.5" UltraATA drives, or the ZIF interface.
|Hitachi C4K60||Toshiba MK8004/4007|
|Capacity Points||20, 30, 40 and 60 GB||20, 30, 40, 60 and 80 GB|
|Spindle Speed||4,200 RPM||4,200 RPM|
(ZIF, Mini ATA)
(ZIF, Micro ATA)
|Cache||2 MB||2 MB|
|Seek Time||15 ms||15 ms|
|Weight||Single platter models: 46 g (1.62 oz)
Dual platter models: 57 g (2.01 oz)
|Single platter models: 51 g (1.8 oz)
Dual platter models: 62 g (2.19 oz)
|Operating Temperature||5-60°C (41-140°F)||5-60°C (41-140°F)|
|1.4/1.0/0.4/0.08 W||1.8/1.1/0.4/0.07 W|
The high capacity drives are thicker due to their two-platter configuration.
We received Hitachi's CE version of the C4K60, which uses a ZIF interface to connect the drive to its host. However, the protocol used is UltraATA/100.
- Will 1.8" Hard Drives Do The Job?
- PMR: Perpendicular Magnetic Recording
- Comparing The Candidates
- Hitachi TravelStar C4K60: 1.8", 30 GB
- Toshiba MK8007GAH: 1.8", 80 GB
- Toshiba MK4007GAL: 1.8", 40 GB
- Test Setup
- Data Transfer Performance
- Access Time
- Interface Performance
- I/O Performance
- Application Performance