After unveiling the first 16 GB microSDHC memory card back in October 2008, Toshiba today announced the world’s first 64GB SDXC memory card, which also boasts the fastest data transfer rate out there. The card has a top write speed of 35Mbps and a read speed of 60Mbps, enough for handling a 2.4GB video file in 70 seconds.

Toshiba plans to ship the first samples of the new card to OEM partners in November, followed by general sales starting sometime in spring 2010. In theory, an SDXC memory card (a next-generation SD card) is even able to store 2TB (SDHC maxes out at 32GB).

Around that time, the company also aims at launching a new SDHC cards, a 16GB and a 32GB model. Both versions feature a write speed of 35Mbps and a read speed of 60Mbps. They are expected to go on sale in spring 2010.