SD cards will soon get rated for app performance

A new classification system for SD cards is designed to help customers understand how well each product will perform when used to run apps. The first class is called A1, and has been defined as part of the Secure Digital 5.1 spec released by the SD Association; other classes will come later.App Performance Class A1 cards require sustained sequential performance of 10 MB a second as well as 1500 random read IOPS (input/output operations per second) and 500 random write IOPS. As Anandtech notes, t