昨天入手1张SanDisk Ultra 128GB microSDXC Class10 UHS-I
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型号为SDSDQUA-128G-G46A
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群光代理
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先装到红米上测试，已事先格式化成FAT32
红米版本：eMMC = micron 3.64G (2014/01生产、MIUI JHBTWAH 13.0 稳定版)
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看来有抓到完整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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接着再把红米当做读卡机、接上USB2.0传输线做测试
CrystalDiskMark
用1000MB参数下去测速度有点异常，Seq Write变得非常慢
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ATTO Disk Benchmark
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改用Transcend TS-RDF5 USB 3.0读卡机做测试
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
接在读卡机上速度就正常许多了
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ATTO Disk Benchmark
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目前这张TF卡的价格不便宜，售价足以买一台红米了
Ultra系列性能非常普通，若要高速版的话等Extreme系列上市吧
对于大容量储存空间有兴趣者可以尝试看看
当然定期备份是不可少的...若卡片挂掉可是一次损失128G呢