試験の結果です。
MicroSDのClass4の為、余りスピードが出ないようです。
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CrystalDiskMark 3.0.1 (C) 2007-2010 hiyohiyo
Crystal Dew World : http://crystalmark.info/
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* MB/s = 1,000,000 byte/s [SATA/300 = 300,000,000 byte/s]
Sequential Read : 14.461 MB/s
Sequential Write : 6.398 MB/s
Random Read 512KB : 14.325 MB/s
Random Write 512KB : 0.728 MB/s
Random Read 4KB (QD=1) : 3.043 MB/s[ 743.0 IOPS]
Random Write 4KB (QD=1) : 0.006 MB/s [ 1.5 IOPS]
Random Read 4KB (QD=32) : 3.110 MB/s [ 759.3 IOPS]
Random Write 4KB (QD=32) : 0.010 MB/s [ 2.3 IOPS]
Test : 100 MB [K: 6.3% (7.4/119.1 GB)] (x5)
Date : 2012/02/22 10:51:31
OS : Windows 7 Ultimate Edition SP1 [6.1 Build 7601] (x86)