The SD Association unveils a new UHS Speed Class 3 and matching symbol for SD cards capable of writing a minimum of 30Mb/s for 4K2K video.

Between the classes and ratings, picking out the right SD card can be a challenge. We break down the most important specs and details so you can decipher the GB, the MB/s the class numbers and the ...

If you are wondering what are SD card Classes are and why they are important this quick guide explains why you must match the card speed to ...

Video Speed Class: Denoted by a “V” symbol on the SD card with a number next to it. That number is either 6, 10, 30, 60, or 90, referring to the minimum MB/s speed of the card.

Shopping for the best microSD cards for phone, camera, or gaming console? Weigh the pros & cons of top models and brands, Sandisk to Samsung.

If you need a memory card for your camera, the Lexar Professional 1800x v60 UHS-II SDXC is the best choice for most people and most cameras.

SD products are rated at a minimum speed, the Speed Card Rating. A Class 2 SD card can write at least 2MB/s, a Class 4 SD card can write at least 4MB/s and so on.

I have a Canon SD980 with a microSDHC memory card (w/adapter). Will I see any benefit buying one of those 'ultra' speed SD cards?

Most SD cards should have a number on them, such as 2, 4, 6, or 10 to denote their minimum write speed in MB/seconds. Sandisk's class 4 cards, for example, transfer speeds at 15 MB/sec, and their ...

SD cards are categorized into classes. Certain class designations guarantee certain speeds. A typical cheap card will be Class 4, meaning it can read and write data at 4 Megabytes per second (MB/s).