Articles from June 2010
The SD Association has introduced symbols to denote the latest high-speed SDXC and SDHC cards and to help consumers identify ideal cards for their devices. A UHS-I specification indicates a card has an interface capable of transferring data at up to 104 MB/s, four times faster than the current limit of 25 MB/s. UHS-I cards will be compatible with existing devices but can only make use of their extra speed capabilities when used with a UHS-I reader or cameras. An additional 'Class 1' symbol on these cards promises real time recording of HD videos. This symbol differs from the Class 2, 4, 6 and 10 logos used for non-UHS-I cards that defined minimum write speed.