Toshiba's new 1.8-inch hard drives for personal music players can store as much data as hard drives on some low-end PCs, the company announced yesterday.

The 1.8-inch drives now come in 20GB and 40GB varieties, Toshiba said. These are the drives used inside Apple's iPods, which already offer capacities of up to 40GB.

The new Toshiba drives rotate at 4,200 revolutions per minute, and transfer data at a rate of 100MBps. They consume 1.4 watts of power, and use the ATA-5 (Advanced Technology Attachment version 5) interface.

Hitachi also manufactures a line of 1.8-inch hard drives, two of which are used in Dell's new Digital Jukebox musical player. The company announced a 40GB 1.8-inch drive in January that has been shipping since April, a Hitachi spokesman said.