Smaller sizes of SD cards increase the capacity of portable game consoles.
SDHC and SD cards are used in MP3 players, cellphones and cameras that have a slot to expand the storage capacity of the devices. Both formats are used to transfer data from these devices to a computer for further processing and manipulation of video and photographs. Both formats are useful to transfer data between computers.
Capacity
Secure digital (SD) cards range in storage capacity from 512MB to 2GB, While secure digital high capacity (SDHC) cards range in storage capacity from 4GB to 32GB. A 2GB card will be able to store 770 photos or 20 to 40 minutes of video depending on the quality setting.
Card Class
Card class refers to the minimum writing speed of the card. An SD card labeled as SD 2 means that the card can write at a speed of 2MB per second. SDHC cards are rated as class 4 or 6 and can write data onto the card at 4MB or 6MB per second.
Uses
SD cards are used in older video camcorders and digital cameras to store photos and take standard definition video. They are useful to transfer documents and music from one computer to another and portable game consoles. SDHC cards are used to store and transfer high-quality video and photographs taken with newer video and digital cameras as of 2011. The higher writing speeds makes SDHC cards ideal to use with professional digital and video cameras. SDHC cards are backward-compatible with products that use SD cards through a firmware upgrade.
Price and Availability
With higher speed cards and competition among manufacturers, smaller capacity and lower-speed cards have become more affordable. 2GB SD cards can be purchased for $3 or less and SDHC cards range from $6 to $50 dollars based on capacity and brand.
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