How Fast Is SDXC?.
How Fast is SDXC? A Comprehensive Guide for Beginners
Introduction:
Secure Digital Extended Capacity (SDXC) is a memory card format that was introduced in 2009. It is the successor to the SDHC format, and it offers significantly faster speeds and higher storage capacities. SDXC cards are commonly used in high-end cameras and camcorders, as well as in some smartphones and tablets.
SDXC Speed Classes:
SDXC cards are classified into different speed classes, which indicate their minimum sustained write speed. The following table shows the different SDXC speed classes and their corresponding minimum write speeds:
| Speed Class | Minimum Sustained Write Speed |
|---|---|
| UHS Speed Class 1 (U1) | 10 MB/s |
| UHS Speed Class 3 (U3) | 30 MB/s |
| Video Speed Class 30 (V30) | 30 MB/s |
| Video Speed Class 60 (V60) | 60 MB/s |
| Video Speed Class 90 (V90) | 90 MB/s |
SDXC Read and Write Speeds:
SDXC cards can offer read and write speeds that are much faster than older SD card formats. The fastest SDXC cards can offer read speeds of up to 985 MB/s and write speeds of up to 985 MB/s. However, the actual speed of an SDXC card will depend on its speed class and the device in which it is being used.
Factors that Affect SDXC Speed:
In addition to the speed class of the SDXC card, there are a number of other factors that can affect its speed, such as:
- The type of device in which the card is being used. Some devices have faster memory card controllers than others.
- The file system that is being used on the card. The exFAT file system is generally faster than the FAT32 file system.
- The type of data that is being transferred. Writing RAW files to an SDXC card will generally be slower than writing JPEG files.
- The ambient temperature. SDXC cards can slow down in hot environments.
Choosing an SDXC Card:
When choosing an SDXC card, it is important to consider the following factors:
- The speed class of the card. Choose a card with a speed class that is appropriate for your needs. If you are planning on shooting high-resolution video or RAW photos, you will need a card with a faster speed class.
- The storage capacity of the card. SDXC cards are available in a variety of storage capacities, from 32 GB to 1 TB. Choose a card with a capacity that is sufficient for your needs.
- The brand of the card. Some brands of SDXC cards are more reliable than others. It is important to do your research before choosing a card.
Tips for Using SDXC Cards:
Here are a few tips for using SDXC cards:
- Format the card before using it for the first time. This will ensure that the card is compatible with your device and that its file system is optimized for performance.
- Keep the card clean and free of debris.
- Avoid using the card in extreme temperatures.
- Make sure that your device has the latest firmware installed.
Conclusion:
SDXC cards offer fast speeds and high storage capacities. They are the ideal choice for high-end cameras and camcorders, as well as for some smartphones and tablets. When choosing an SDXC card, it is important to consider the speed class, storage capacity, and brand of the card. It is also important to format the card before using it for the first time and to keep it clean and free of debris.
Additional Information:
Here is some additional information about SDXC cards:
- SDXC cards are compatible with all devices that support the SDXC format.
- SDXC cards can be used to store a variety of data, including photos, videos, music, and documents.
- SDXC cards are relatively durable, but they can be damaged if they are dropped or exposed to water.
- SDXC cards are backed by a warranty from the manufacturer.
Troubleshooting SDXC Card Problems:
If you are having problems with your SDXC card, here are a few things you can try:
- Restart your device.
- Try using the card in a different device.
- Format the card.
- Contact the manufacturer of the card for support.
Conclusion:
SDXC cards are a great way to store and transfer data quickly and easily. By following the tips above, you can ensure that your SDXC card performs at its best.