Recently, the International SD Association announced the new generation of general SD 5.0 standard for memory cards. In order to meet the current demand for high-definition video shooting, the original standard added a Video Speed Class, which was developed to meet the demand for reading and writing speed for large throughput of today's ultra-high video specifications, such as 4K/8K, 3D stereo, 360 degrees, etc.

SD 5.0 follows the previous UHS-II bus technology, but in order to meet the needs of high standard video throughput, SD 5.0 introduces a new transmission protocol "VSC", which is adjusted and optimized according to the characteristics of NAND flash memory architecture. It is more efficient than before, and supports synchronous writing of eight files at the same time.

The video speed levels in the SD 5.0 standard are divided into five categories. From low to high, they are V6 6MB/s, V10 10MB/s, V30 30MB/s, V60 60MB/s, and V90 90MB/s (of course, they are all write speeds). V10 and V30 correspond to UHS 1 UHS 3。 Among them, the write speed corresponding to V60 and V90 reaches 60MB/s and 90MB/s, which can meet the requirements of 8K and 360 degree video for read/write speed MB/s and 30 MB/s It can meet 4K and 1080p video recording.

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