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And here is the memory card:
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Data can be read faster off this flash drive than off the memory card but writing to the memory card is faster than to the flash drive. This greater uniformity of read-write speeds seems to be a feature of memory cards. These speeds seem to be reflected in real world applications. It takes a lot longer to copy files to the flash drive than vice versa. The MacBook's hard drive is mostly faster than either portable device:
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Good research David, though I am not tested the memory speed and usase but noticed that my new San Disk Memory Card functioned faster than my old one.
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