What is the Difference Between SDHC and SDXC?

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The main difference between SDHC and SDXC cards lies in their storage capacity and file system. Here are the key differences:

  • Storage Capacity: SDHC (Secure Digital High Capacity) cards have a storage capacity of up to 32GB, while SDXC (Secure Digital Extended Capacity) cards can store up to 2TB (2000GB).
  • File System: SDHC cards use the FAT32 file system, while SDXC cards employ the exFAT file system. The exFAT file system is better suited for the large capacity of SDXC cards.

In terms of speed, there is not much difference between SDHC and SDXC cards, as both types can reach fast read and write speeds. However, some SDXC cards can reach higher speeds than SDHC cards. The physical dimensions of SDHC and SDXC cards are identical, and they can both be used with various devices.

SDHC cards are suitable for standard cameras, compact cameras, and camcorders, as they can store vacation photos or videos in Full HD quality. On the other hand, SDXC cards are suitable for professional cameras, SLR cameras, action cameras, and devices that require large storage capacities for high-resolution images or 4K video footage.

Comparative Table: SDHC vs SDXC

The main difference between SDHC and SDXC memory cards lies in their storage capacity and file system. Here is a comparison table highlighting the key differences between the two:

Feature SDHC (Secure Digital High Capacity) SDXC (Secure Digital eXtended Capacity)
Capacity Up to 32GB More than 32GB up to 2TB
File System FAT32 exFAT -
Speed Offers lower-speed options, up to UHS-I speeds Offers higher-speed options, including UHS classes
Compatibility Generally compatible with most devices Less compatible with older devices
Cost Lower costs compared to SDXC cards More expensive due to larger storage capacity

Both SDHC and SDXC cards are generally compatible with most devices that support the standard SD format. However, older devices designed to work with standard SD cards may not be compatible with higher-capacity SDXC cards. It is essential to check your device's specifications to ensure compatibility with the memory card you choose. In terms of speed, there is not much difference between SDHC and SDXC cards, but most SDHC cards offer lower-speed options compared to SDXC cards.