At 12.5mm, it is 40percent thinner than any similar device, maker claims
Multi-bit memory cells could help drive down prices, says Sandisk
64Gbyte drive will be faster than than 32Gbyte version
But only when data is fragmented, Sandisk admits
But at £5,000, it is not about to see off the old hard disk
£310 Sandisk 1.8in flash drive designed to replace hard disk
Gigabytes of flash give magnetic drives similar performance to solid state