dealssandisk ultra 16gb microsdhc class 10 30mb/s…

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I'm not impressed with the sustained write speed. It starts off fast, then quickly (within seconds) fall to 4 MB/s. Read speed is impressive though, 40 MB/s. Tested on a USB 3.0 card reader, as well as on a laptop's SD slot. Bought mine on Amazon.

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@theimmc: I noticed that too. But perhaps this is targeted toward smartphone users?