SDXC cards carry on from where the SDHC format leaves off, with increased capacities and faster performance. The Integral UltimaPro is one of the latest in the developing range, with its 64GB capacity ample for hours of video or thousands of high-resolution images. Its Class 10 designation guarantees a minimum 10MB sustained write speed per second, making it ideal for continuous high-definition video recording. When used with devices supporting the UHS-1 interface, write and read speeds are said to be as high as 60MB/s and 35MB/s respectively.



Link: Techradar