ノーブランド MicroSD 32GB Class4

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CrystalDiskMark 5.2.1 x64 (C) 2007-2017 hiyohiyo
                           Crystal Dew World : http://crystalmark.info/
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* MB/s = 1,000,000 bytes/s [SATA/600 = 600,000,000 bytes/s]
* KB = 1000 bytes, KiB = 1024 bytes

   Sequential Read (Q= 32,T= 1) :    20.394 MB/s
  Sequential Write (Q= 32,T= 1) :     1.808 MB/s
  Random Read 4KiB (Q= 32,T= 1) :     3.437 MB/s [   839.1 IOPS]
Random Write 4KiB (Q= 32,T= 1) :     1.331 MB/s [   325.0 IOPS]
         Sequential Read (T= 1) :    22.856 MB/s
        Sequential Write (T= 1) :     3.563 MB/s
   Random Read 4KiB (Q= 1,T= 1) :     3.136 MB/s [   765.6 IOPS]
  Random Write 4KiB (Q= 1,T= 1) :     1.157 MB/s [   282.5 IOPS]

  Test : 50 MiB [D: 51.1% (15.2/29.7 GiB)] (x2)  [Interval=5 sec]
  Date : 2017/01/17 16:59:44
    OS : Windows 10 Enterprise [10.0 Build 14393] (x64)
 

まぁ、こんなもんでしょ。