Ultra CF provides a transfer rate twice that of SanDisk's standard memory cards, allowing data to be quickly saved and the camera to be ready to capture another image.ĬFast, or CompactFast, combines the CompactFlash card form factor with the Serial ATA ( SATA) interface. A high-end version, Ultra CompactFlash (Ultra CF), is optimized for more demanding photography, such as a quickly shot succession of high-resolution pictures or pictures of a moving subject. This translates to a drop to the floor from 10 feet versus a single foot for the mechanical disk drive.ĬompactFlash is a popular card choice for use with digital single-lens reflux cameras.
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The operating shock rating (basically, the height they can be dropped from and still work) for a CF card is 2,000 gauss (G) compared to a 100 G to 200 G rating for the mechanical drive of a typical portable computing device. A CF card features solid-state construction, which makes it much more rugged than most traditional storage devices. However, NAND is better suited for large amounts of data storage and became the default type of flash memory used in all removable memory cards, including the CompactFlash card and its primary competitor, the Secure Digital ( SD) card.īecause flash is nonvolatile memory, stored data is retained when a device's power source is turned off or lost. NOR flash has the advantage of being able to execute programs directly from flash without having to be copied in a device's system random access memory (RAM). The original CompactFlash card was built using NOR flash memory.
CF cards today are primarily used as removable memory for higher-end digital photo and video cameras. Small memory cards allow users to add data to a wide variety of computing devices. It has no moving mechanical parts and does not need a battery to retain data. A CompactFlash card (CF card) is a memory card format developed by SanDisk in 1994 that uses flash memory technology to store data on a very small portable device.
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