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[Q] Is there an IO limit for Micro SDs?

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By VampireWicked, Junior Member on 9th November 2014, 10:25 AM
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Previously, I tried to use an Adata class 10 32GB micro SD and mounts2sd to work around the small data partition problem.
It might be the slowness of that card (pasted the benchmark by Crystaldiskmark), my Evo 3D starts to lag that I have to move the application data back to the data partition of the phone's eMMC. The read write speed using A1 SD Tool is 19.33MB/s and 10.19MB/s.
I bought another Sandisk Ultra 64GB micro SD and benchmarked it using Crystaldiskmark and A1 SD Tool. The read speed using Crystaldiskmark is above 40MB/s, but the read speed tested using A1 SD Tool is 20.50MB/s. The write speed tested using A1 SD Tools is 9.17MB/s, which is even lower than the original card.
I would like to get a micro SD, maybe even a Sandisk Extreme Plus, but I am afraid that there is an IO limit on the micro SD card slot, which is a hardware limitation.
Any pointers? Thanks!
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