SD Card UHS-III with 624MB/s and microSD A2 (Application Performance Class 2)

Posted by Charbax – March 4, 2017

SD Card Association, the standard organization of SD cards, just released two new specification meeting new market needs.

The first is Application Performance Class 2 (A2) – a new performance class that consider Random & Sequential performance meeting the new need of storing and running applications from cards allowing means to consumers which cards to purchase in point of sale meeting their products needs. Coming after A1, introduced last November, A2 is a higher level of performance enabled by new features supported now by SD – like command Queuing and Cache.

The second enhancement of the standard is UHS-III. It is enhanced physical interface that enables byte rate of up to 624MB/s!

I am hoping that some device makers will implement devices with 2 or more microSD slots to increase the total available maximum capacity and even doubling the speed if a parallel access can be allowed.