SDXC, SDHC, MicroSD, MiniSD, SD ? You don’t know what card do you need for your phone, MP3, or camera?
We all carry around smartphones, MP3 players, digital cameras, camcorders, which make memory cards a must to have for keeping your digital devices running. If you got a new device that can snap photos or play music (except Apple products) it will requires a memory card in order to offer you an additional storage capacity, You are most likely going to use a Micro Secure Digital (Micro-SD) card. SD is the dominating flash memory format, but it’s not that simple. There are types of SD cards of different shapes, sizes, and speeds, so picking the right one for each device can be slightly confusing.
When it comes to flash memory cards, there are three main specifications you need to consider: (SSF) Size, Speed and Format. Each of the three variables has its own set of classes, so you can have anything from a 1GB Class 2 microSD card to a 32GB UHS-1 SDXC Class 10 card. So let’s try to figure out how we can distinguish between them.
The first thing to look into when you are about to buy a memory card is ” where you’re going to use it” ; for a camera, camcorder, or a smartphones ? As each uses different size of card.
- The standard SD card is the largest and the most used. Most nowadays digital cameras use standard-size SD cards.
- MiniSD cards, the least used these days, no need to go deep with this format of cards as it’s almost not used at all.
- MicroSD cards, used in most cell phones and smartphones. Generally, microSD cards of the same size and speed class cost more than SD cards.
The second important thing is “the capacity” as it’s important to know how to chose the size. SD cards offer different storage capacities, which determines the card’s size classification. In some cases the microSD card in our smartphone isn’t a microSD card. Actually It’s Micro Secure Digital High Capacity ( microSDHC ). Most SD cards you’ll find today are technically SDHC, with capacities between 4GB and 32GB. The largest class is the Secure Digital Extended Capacity (SDXC) which can range from 64GB to 2TB. I agree with the fact that people say “The larger is better” But you need to make sure that your device supports this large capacity. Each device has its SD/SDHC/SDXC classification so make sure to chose the correct format. except for the old digital cameras which can only read SD cards. In this case buying a SDHC cards become useless. likewise for all cameras that aren’t SDXC-compatible they won’t accept 64GB cards. Better to double-check your devices before getting SDHC or SDXC cards.
The third important thing to check is the speed classification. If you’re using a point-and-shoot digital camera, a smartphone or a camcorder, speed class isn’t much important. however, you need a fast read/write card in order to take more than two or three shots at a time for instance while using digital SLR, SD cards as generally they are described by their Speed Class, ranging from Class 2 to Class 10 from slowest to fastest. There’s even faster category called Ultra High Speed ( UHS Class 1) But almost not used currently.
- Class 2 is suitable for standard-definition video recording
- Class 4 and Class 6 can record high-definition video.
- Class 10 is the card for HD video and consecutive High resolution photos.
The various card classes seem to have different speed ranges according to different memory manugfacturers.
According to Sandisk, Class 4 cards offer read and write speeds of 15 megabytes per second (MBps), Class 6 cards can handle 20MBps, and Class 10 cards reach 30MBps. and UHS-1 SD cards can transfer up to 45MBps,
Kingston describes its Class 4 cards as delivering a 4MBps data transfer rate, Class 6 as having 15MBps write speed, and Class 10 offering a 40MBps data transfer rate.
If you want to shoot HD video, use a digital SLR, or high-resolution photos in quick succession. Better to buy a Class 10 card. If you need a memory card for occasional shoots, the Class 4 or Class 6 will be good. Class 2 cards aren’t the best choice for the new-on-market Smartphones. Class 2 are simply too slow to record HD video, so you’re limiting your device. The price difference between Class 4, Class 6, and Class 10 cards can vary. At the time of this writing. The UHS-1 cards are much, much more expensive than the other cards; Unless you’re a professional photographer who needs speed when dealing with very large images or high definition videos, In brief you don’t really need UHS-1 except if you have professional or semi-professional Cameras.
Always check your device’s documentation before you buying a memory card.