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A variant of CompactFlash, known as CFast, is based on the Serial ATA bus, rather than the Parallel ATA/IDE bus all previous versions of CompactFlash are designed for.
These cards support a higher maximum transfer rate than current CompactFlash cards. SATA (SATA 2) supports transfer rates up to 300 MByte/s (or 3.0 Gbit/s), while PATA is limited to 133 MB/s using UDMA 6. Few, if any, current flash memory devices support speeds greater than 133 MB/s. CFast cards are not physically or electrically compatible with CF cards, requiring new card readers and new digital cameras to take advantage of them. However, since SATA is based on PATA, CFast cards don't require new driver software in operating systems. CFast cards use a 7-pin SATA data connector (identical to the standard SATA connector), but a 17-pin power connector that appears incompatible with the standard 15-pin SATA power connector, so an adaptor will be required to connect CFast cards in place of standard SATA hard drives.
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Warranty: 5 years
