A1 or A2 sd card for gopro?

To consistently achieve the best results with your GoPro camera it is important to select microSD cards with know class and speed that are known to work well with your camera. The Application Performance Class is a newly defined standard from the SD card specifications 5.1 and 6.0 which is used to define sequential reading speeds. Will this new benchmark affects the choice of sd card for your gopro?

The difference between A1 and A2 ratings on memory cards?

A1: “The Application Performance Class 1 (A1)

is defined by SD Physical 5.1 specification. Not only for storing maps, pictures, videos, music, dictionary, and documents, it also enables the user to be freed from sluggish for editing and updating data.”

A1 card must meet or exceed these thresholds:

  • Random Read: 1500 IOPS
  • Random Write: 500 IOPS
  • Sustained Sequential Write: 10 megabytes per second

A2: “The Application Performance Class 2 (A2)

is defined by SD Physical 6.0 specification. It makes SD memory card much higher performance than the A1 performance by using functions of Command Queuing and Cache.”

A2 card must meet or exceed these thresholds:

  • Random Read: 4000 IOPS
  • Random Write: 2000 IOPS
  • Sustained Sequential Write: 10 megabytes per second

IOPS

“IOPS”  stands for input-output access per second.

Should you choose an A1 or A2 rating memory card for your gopro?

To be frank, the Application Performance Class Rating on cards today is used to rate sequential reading speeds for apps on mobile devices.  So it is safe, to ignore the A rating and focus instead on the speed ratings that start with V or U to choose a good memory card for your gopro. Here is an article that can help