https://www.mymemory.co.uk/blog/wp-content/uploads/2018/09/CRP18_SanDisk_MicroSD_A2_Animation_4K-2.mp4 Sandisk Extreme Pro microSDXC card Tech specs: Read speed: Up to 200MB/s | Write speed: 140 MB/s | SD Class: 3 | Capacity: 32 GB, 64 GB, 128 GB, 256 GB, 512 GB, 1 TB A1: “The Application Performance Class 1 (A1) was 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.” So, now that slotted Android devices can store and run apps from removable cards, the SD Association has introduced a new specification to enable the best user experience – Application Speed Class 2 (A2).

SanDisk 1TB Extreme microSDXC UHS-I Memory Card with Adapter SanDisk 1TB Extreme microSDXC UHS-I Memory Card with Adapter

Samsung EVO Select microSD memory card Tech specs: Read speed: Up to 100MB/s | Write speed: 90 MB/s | SD Class:10 | Capacity: 128 GB, 256 GB From this diagram, and in reference to IOPS, it is clear to see that the A2 provides an extraordinary gain. The minimum read performance is up by 2.7x, at the same time as providing 4x faster minimum write speeds.It's easy for all of our digital content to build up over the years. But our devices only offer a limited capacity to store our files and data. So, what do you do when you have files you need to store but no more space on your device? Gigastone: 4K Camera Pro A2V30 Series, 4K Camera Pro A2V60 Series, 4K Camera Extreme A2V90 Series: 64/128/256GB/1TB Since Apple’s IOS and Google’s Android operating systems hit the mobile technology market over 10 years ago, being able to give users the ability to add or remove additional storage capacity when desired, has been a major difference between the two systems. A microSD card slot is offered in various devices which operate using Android, allowing users to add an adjustable quantity of storage. Thanks to Android’s adoptable storage device capability, microSD cards have rapidly been adopted by users globally. Capacity: If you do have a lot of photos and videos, a smaller microSD card will not be enough to store all your items, so you would want to look for a larger microSD card, like one with 128 GB or even 1 TB if you need it.

SanDisk Extreme® microSDXC™ UHS-I CARD - Western Digital SanDisk Extreme® microSDXC™ UHS-I CARD - Western Digital

Samsung Evo Plus microSD card Tech specs: Read speed: 100MB/s | Write speed: 60 MB/s | SD Class: 10 | Capacity: 64 GB, 128 GB, 256 GB, 512 GB

Application Speed Class 2, defines the minimum specification for cards and host devices. Sequential read and write speeds are now joined in importance by random read/write speeds (measured in IOPS). The higher the IOPS (Input/Output operations Per Second) the smaller files can be read and written to the card in any one time. So, for apps that open multiple small files – high scores, different graphics for a single level, licensing permissions, etc. – a minimum IOPS level is important, which is covered by the A2 spec. Speed: Most devices are compatible with a Class 10 or U1-rated card. However, if your device requires a lower speed class, shop for microSD cards that have a Class 2, 4, or 6 classification. https://www.mymemory.co.uk/blog/wp-content/uploads/2018/09/New-A2-App-Performance-Class.mp4 Is the Application Performance Class Specification relevant to cameras? 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. ”