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The new cards, expected to be available worldwide in September in 4-gigabyte , 8 GB and 16 GB capacities, are designed to deliver peak performance when used with the new digital single-lens reflex (DSLR) camera, Nikon D90.

Featuring a 50-per cent speed boost from previous 20 MB/s cards, the new SanDisk Extreme III 30MB/s Edition SDHC card makes it possible to record 39 images in continuous shooting mode at 4.5 frames per second with a file size of 6.0 MB JPEG L Fine per image.

The SanDisk Extreme III 30MB/s SDHC cards make it easy for consumers to capture and store more high-resolution images and video content. When placed in SanDisk's new ImageMate Multi-Card USB 2.0 Reader/Writer, still images and video can be transferred from the new SDHC card to a computer at up to 30MB/s, greatly reducing the waiting time to offload large files from the card to the computer.

All SanDisk Extreme III cards are capable of functioning in extreme temperatures, from -13 to 185 degrees Fahrenheit or -25 to 85 degrees Celsius.

The cards also carry a lifetime limited warranty. SanDisk Extreme III SDHC 30MB/s Edition cards, which have a Class 6 performance rating, are fully backwards-compatible; working in any camera, card reader or other device that supports SDHC cards.