SDXC and SDHC Devices and Memory Cards Soon To Reach 104 MB/s Speeds!

The SD Association announced today two new high-speed performance symbols for the fastest SDXC and SDHC devices and memory cards. The first symbol identifies products with bus-interface speeds up to 104 Megabytes per second for greater device performance. The second symbol identifies SD memory cards and products with a performance option allowing real-time video recording. The existing Speed Class symbols for non-UHS SD, SDHC and SDXC products are Class 2, Class 4, Class 6 and Class 10. They refer to the minimum write speed performance of the memory card.

The new Ultra High Speed (UHS) symbol can be found exclusively on SDXC and SDHC products. SDXC or SDHC products with the UHS-I symbol offer the fastest bus-interface speeds available today, capable of supporting data transfer speeds up to 104 Megabytes per second. UHS-I quadruples the existing maximum possible speed of 25 Megabytes per second. UHS bus interfaces are backwards compatible. SDXC UHS-I and SDHC UHS-I memory cards achieve greatest performance when paired with a UHS-I device and allow consumers to record HD resolution videos, plus perform other simultaneous recording functions.