Adata SDXC card Premier ONE UHS-II 64 GB

The Speed Class provides information about the minimum, continuous data transfer when writing video files to a memory card. The speed class number indicates the transmission rate in megabytes per second. Class 2 cards are designed for a minimum, continuous transfer rate of 2 MB / s and Class 10 for a minimum, continuous transfer rate of 10 MB / s. The speed class is divided into classes 2, 4, 6 and 10. For Full HD video (1080p) at least Class 6 is recommended.

SD cards with the UHS-II standard offer up to 312 MB / s in compatible devices. As with UHS-I, there are also the so-called UHS speed classes here: U1 for full HD videos - and U3 for 4K videos. Memory cards with support for UHS-II are backwards compatible and can be used in devices without UHS support (with limited power).