USB 3.0 SD Cardreaders

Quick comparision of couple USB 3.0 cardreaders with UHS-I support.

usb3_cardreaders

Transcend 300x SDHC UHS-1 U1
TRANSCEND 32 SDHC

TS-RDF5 TS-RDF8 TS-RDF9 FCR-MLG4
Read speed
Sequential Read (QD=Q32) (MB/s) 92.26 88.71 93.56 94.11
Random Read 4KB (QD=32) (MB/s) 6.58 9.39 10.52 10.50
Sequental Read (MB/s) 93.54 93.54 94.17 94.37
Random Read 4KB (MB/s) 6.38 8.92 10.11 10.04
Write Speed
Sequential Write (QD=Q32) (MB/s) 35.05 38.22 37.89 38.25
Random Write 4KB (QD=32) (MB/s) 0.98 1.00 0.78 1.03
Sequental Write (MB/s) 34.81 37.95 37.54 37.33
Random Write 4KB (MB/s) 0.82 0.68 0.88 0.66

Sandisk microSDHC UHS-1 U3

Sandisk_MicroSD_32GB_ExtremePro

TS-RDF5 TS-RDF8 TS-RDF9 FCR-MLG4
Read speed
Sequential Read (QD=Q32) (MB/s) 93.13 90.35 96.66 96.54
Random Read 4KB (QD=32) (MB/s) 7.33 9.40 9.44 8.72
Sequental Read (MB/s) 95.00 96.48 97.31 96.69
Random Read 4KB (MB/s) 7.19 9.36 9.40 8.63
Write Speed
Sequential Write (QD=Q32) (MB/s) 87.30 86.72 88.90 88.81
Random Write 4KB (QD=32) (MB/s) 2.63 0.09 3.28 3.29
Sequental Write (MB/s) 87.88 91.45 89.35 87.02
Random Write 4KB (MB/s) 2.56 0.10 3.16 3.18

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