昨天入手1張SanDisk Ultra 128GB microSDXC Class10 UHS-I
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型號為SDSDQUA-128G-G46A
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群光代理
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先裝到紅米上測試，已事先格式化成FAT32
紅米版本：eMMC = micron 3.64G (2014/01生產、MIUI JHBTWAH 13.0 穩定版)
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看來有抓到完整128GB容量
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SD Tools
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SD Card Tester
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Androbench (Storage Benchmark)
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接著再把紅米當做讀卡機、接上USB2.0傳輸線做測試
CrystalDiskMark
用1000MB參數下去測速度有點異常，Seq Write變得非常慢
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ATTO Disk Benchmark
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改用Transcend TS-RDF5 USB 3.0讀卡機做測試
TS-RDF5 f/w：TS37
USB3.0主控：NEC/Renesas μPD720202
USB3.0 f/w：V2.0.2.4
USB3.0 driver：V3.0.23.0
CrystalDiskMark
接在讀卡機上速度就正常許多了
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ATTO Disk Benchmark
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目前這張TF卡的價格不便宜，售價足以買一台紅米了
Ultra系列性能非常普通，若要高速版的話等Extreme系列上市吧
對於大容量儲存空間有興趣者可以嘗試看看
當然定期備份是不可少的...若卡片掛掉可是一次損失128G呢