Buzz
Micro SD is the standard for small-sized cards (15 x 11 x 1 mm), most commonly used in smartphones and handheld devices.
The capacity of these cards used to range from 128 MB to 2 GB. However, nowadays, the commonly used cards start from 8 GB and above.
What is the speed of memory cards?
The speed of a memory card represents the rate at which data is input or output on the memory card. It can be said that the card's speed is the data communication speed between the card and the device or the write and read speed of the card.
What do the 'X' ratings on memory cards mean?
Memory card speed is usually determined by a number followed by the letter X, such as 8X, 12X, 300X, etc. A higher X number indicates a faster card. X is the base unit representing 150KB. Nowadays, 20X is considered standard speed, 20X to 40X is average speed, and above 40X is high speed.
For example, on a memory card with a write speed of 8x, it can be understood that the maximum read speed of the memory card is 8 x 150 = 1.2 MB/s.
What is Speed Class for memory cards?
Speed Class (phone memory card) signifies the minimum performance that a memory card achieves in data transmission. Speed Classes typically include 2, 4, 6, and 10, used in consumer devices like MP3 players, smartphones, and even laptops. The Class is usually denoted by a number inside the letter C.
For example, a Class 10 memory card must have a minimum transfer speed of 10MB/s, and you will see the number 10 icon on the card within the letter C.
