I use a lot of microSD cards, mostly because I flash a lot of custom ROMs on my Android smartphones and I wanted to find out which microSD card is the fastest in the world.
For this shoot, I am using three of the best Class 10 microSD cards from Samsung, Sony, and SanDisk, the Samsung 64GB PRO rated at 90MB/s, Sony HighSpeed MicroSD rated at 95MB/s, and the SanDisk Extreme PRO rated at 95MB/s.
First, I did a read and write speed test using a free software called Check Flash by a Russian developer.
After doing tests on all the microSD cards, I found some interesting results.
For this particular test, I used my Kingston USB 3.0 microSD card reader.
The SanDisk Extreme performed the best with read speed of around 90MB/s and write speed of 54MB/s.
Samsung came second with read speed of 85MB/s and write speed of 45MB/s.
Sony came last with read speed of 65MB/s and write speed of 30MB/s.
Now all of these manufacturers state their cards transfer at or faster than 90MB/s. Well, reality tells you different results and that is why I did this test.
I also did some real file transfer tests because I want to see real results for myself, not just rely on a speed test software.
I was able to write 2GB file to a Sandisk Extreme PRO card in just 27.76 seconds, to Samsung PRO in 28.13 seconds, and Sony card in 38.61 seconds.
For reading, I copied a 2GB file from the microSD cards to my computer, Sony actually came up first at 20.86 seconds, SanDisk next at 22.80 seconds, followed by Samsung at 23.88 seconds.
Now, for write speeds, my real life tests confirmed the Check Flash software while my read speeds were slightly different.
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