Intel showed off a prototype of a 128GB GB flash drive prototype using the thunderbolt interface. The key-shaped flash drive uses SanDisk SSD flash NAND to store data.
Thunderbolt technology has speed rated for up to 10 Gbps, therefore its twice as fast as current gen USB 3.0 interface. Though Thunderbolt technology and devices didn’t catch up despite the significant throughput advantage and limited use and implementation.
Besides, as of now this is a prototype and its unclear if an end-product will be made out of this. It was only sometime back when Thunderbolt 2 was announced, which will provide up to 20 Gbps transfer speed rate by using 2x 10 Gbps or a single 20 Gbps bi-directional channel.