Toshiba Japan today announced a new 2.5-inch HDD whose 640GB capacity is the highest in its class. The MK6465GSX [JP] is just 9.5mm thick and weighs 102g. It’s the high-end product of Toshiba’s new MK series of HDDs, which also includes models with 160/250/320 and 500GB capacity.

The 640GB model features an 8MB buffer, rotates at 5,400rpm, has 12msec seek time and a buffer-to-computer interface with a speed of 3.0 Gbit/s.

Toshiba plans to ship the first samples of their new HDD starting in about two weeks. The company hopes to sell the HDD to makers of high-end computers and TVs with built-in HD video recording functionality.