Buy an SD Card based on Speed Classes

Memory cards are used in digital cameras, music players, smartphones, tablets, and even laptops. But not all SD cards are created equal — there are different speed classes, physical sizes, and capacities to consider.

Different devices require different types of SD cards. Here are the differences you’ll need to keep in mind when picking out the right SD card for your device.
MarkMinimum Serial Data SD Bus ModeApplication
UHS Speed Class330MB/sUHS-II
4K2K Video Recording
110MB/sFull HD Video Recording HD Still Image Continuous Shooting
Speed Classclass1010MB/sHigh Speed
class66MB/sNormal SpeedHD and Full HD Video Recording
class22MB/sStandard Video Recording

Speed Class and UHS Speed Class* symbols indicate minimum writing performance to ensure smooth writing of streaming content such as video shooting. This is important mainly for camcorders, video recorders and other devices with video recording capabilities.

Speed Class designates minimum writing performance to record video. The Speed Classes defined by the SD Association are Class 2, 4, 6 and 10.

UHS Speed Class is designed for UHS** devices only and designates minimum writing performance to record video on UHS products. The UHS Speed Classes defined by the SD Association are UHS Speed Class 1 (U1) and UHS Speed Class 3 (U3).
* (Speed Class and the UHS Speed Class are not compatible.)
**UHS (Ultra High Speed), the fastest performance category available today, defines bus-interface speeds up to 312 Megabytes per second for greater device performance. It is available on SDXC and SDHC memory cards and devices.