What is Video Speed Class?

A standard that guarantees the minimum write speed mainly for video recording.

The Video Speed ​​Class was formulated in 2016 as a standard that comprehensively covers SD cards for buffer sizes and writing speeds to ensure continuous recording of 4K and 8K high-definition video. The video speed class has 5 levels of index from 6 MB/s to 90 MB/s.

  • Video Speed Class 6 (V6) : minimum 6 MB/s write speed
  • Video Speed Class 10 (V10) : minimum 10 MB/s write speed
  • Video Speed Class 30 (V30) : minimum 30 MB/s write speed
  • Video Speed Class 60 (V60) : minimum 60 MB/s write speed
  • Video Speed Class 90 (V90) : minimum 90 MB/s write speed

UHS-I memory cards support up to V30.

For more information, please refer to the official website of the SD Association:
https://www.sdcard.org/developers/sd-standard-overview/speed-class/

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