How to find out the write speed of a memory card?

I

Ingerniated2017-08-27 14:24:31

Memory cards

Ingerniated, 2017-08-27 14:24:31

There is such a memory card, but the speed is not written on it, its speed is not enough to record video.
I would like to clarify how fast she writes.

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amambaru, 2017-08-27
@amambaru

To measure the speed - connect to a computer and upload a large file. And mark the time.
And formally, C10 is class 10.
https://ru.wikipedia.org/wiki/Secure_Digital#.D0.A...
At least 10 megabytes per second.