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The A1 symbol on Micro-SD cards tell you if it is fast enough for apps

The A1 symbol can tell you if the Micro-SD card is fast enough to run apps.
The A1 symbol can tell you if the Micro-SD card is fast enough to run apps.
The SD Association recently introduced new application performance classes that will specify Micro-SD cards that are fast enough to be used for starting apps and programs. So far only one class, named A1 has been announced

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With the introduction of the new SD card specification 5.1, the SD Association also announced new performance classes that are supposed to tell customers if a card is fast enough to run apps. So far only one level has been introduced, the A1 class. For a card to reach that level, it has to meet or exceed the following minimum requirements:

  • Random Read Input-Output access Per Second (IOPS) of 1500
  • Write IOPS of 500
  • Sustained Sequential performance of 10MB/s.

Not only Android Smartphones can take advantage of Micro-SD cards for starting and running apps. The tiny cards are also popular in Windows tablets, convertibles and notebooks to expand onboard storage. Future SD cards carrying the A1 symbol will easily be recognized as being fast enough for that task. That, however, does not mean that current cards without that symbol are not able to meet or exceed the above mentioned minimum requirements.

 

 

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> Notebook / Laptop Reviews and News > News > News Archive > Newsarchive 2016 11 > The A1 symbol on Micro-SD cards tell you if it is fast enough for apps
Alexander Fagot, 2016-11-27 (Update: 2016-11-27)
Alexander Fagot
Alexander Fagot - Editor
As a former projectionist still used to working with 35 mm film and experience in computer assembling and overclocking, I was drawn to the professional IT crowd a couple of years back and started working in IT support, Windows administration and project management before discovering my love for traveling the world. Now I am working as a news editor from all parts of the world, mostly writing about gadgets and mobile gear for Notebookcheck.