Looking back even a couple of years, the prospect of using a 64Gbyte memory card for storage would seem fantastic, but Toshiba is planning to ship such cards, using the latest SDXC standard, to OEMs in November.
The new SDXC and 32Gbyte and 16Gbyte SDHC Memory Cards are the world’s first memory cards compliant with the SD Memory Card Standard Ver. 3.00, UHS104, which brings a new level of high speed read and write speeds to NAND flash based memory cards: a maximum write speed of 35MByte per second, and a read speed of 60MByte per second. For example, it would be possible to download 2.4GB video data in only 70 seconds.
SDXC Memory Card is the next-generation SD Memory Card standard defined by the SD Association in April 2009, in order to meet the ever-growing demand for high-capacity memory media, offering higher transfer rates for content rich storage applications. The new SDXC Memory Card Standard applies to cards with capacities over 32GB and up to 2Terabytes compared to the SDHC standard, which applies to cards with capacities from 4GB to 32GB. Like the move from SD to SDHC, the new cards are only compatible with SDXC readers, not existing SDHC systems.
UHS 104 is the new ultra high speed interface that delivers data at a rate of 104MB/ sec. It is the highest standard in the new SD Memory Card Standard Ver. 3.00.