Thread: Touch SD Card Speed
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Old 01-23-2012, 04:26 PM   #9
murg
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Quote:
Originally Posted by TonyToews View Post
Oddly enough a class four SD Card, which allegedly would only transfer data a 4 Mpbs would transfer data at 8 Mpbs.
In the electronics industry, it is normal to down label product. Flash memory is made in lots, and after manufacturing it is tested to determine the speed of each chip.

If the manufacturer needs more class 4 parts this week than they have (as tested class 4 parts), they'll use class 6, 8, 10 parts. After all, it costs the manufacturer the same to make, and if they aren't selling as many of the faster labelled parts...
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