Toshiba's got a new series of "high-speed" and "ultra high-speed" SD cards coming to market soon, and although the company claims to be the first manufacturer to introduce these so-called Class 6 cards, we think it may be exaggerating just a bit. You see, the SD Card Association recently adopted three different speed classes (2, 4, and 6), with the class number indicating the card's minimum transfer rate in megabytes per second (i.e. Class 2 cards will always transfer data at at least 2MB/s). So although Tosh's ultra-high speed cards sport a zippy transfer rate of 20MB/s -- categorizing them as Class 6 cards -- we've already seen products on the market from ADTec that boast similar speeds (and waterproofing to boot); therefore, how can Toshiba claim that its Class 6's will be the first to launch? Marketing hyperbole aside, both the high-speed Class 4 cards (with 5MB/s transfer rates) and ultra high-speed Class 6 cards will come in 512MB, 1GB, and 2GB varieties, and you can expect them to drop in Japan in October and worldwide in November.

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Toshiba first to market with Class 6 SD cards?