10 microSD and SD Cards Read Write Speed Comparison

Updated: March 8, 2018 / Home » Tech Comparison

Not all SD cards are equally fast, even if they are of the same class, the read and write speed varies depending on the quality of the flash memory card. As shown in the table below, some class 6 cards outperformed class 10 cards. Do note that the UHS-I cards are primarily targeted at HD video cameras. Using a UHS-I card on your compact digital camera doesn’t improve the speed.

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 ClassRead MB/sWrite MB/s
Kingston UltimateXXUHS-I6241
SanDisk Extreme ProUHS-I4137
SanDisk ExtremeClass 102320
SanDisk Extreme IIIClass 62321
SanDisk Ultra IIClass 41211
OCZ SDHCClass 62311
Samsung PlusClass 102321
Samsung PlusClass 61812
Lexar Professional 133xClass 102321
Lexar Professional 133xClass 62320
TranscendClass 102322
TranscendClass 62011
A-Data TurboClass 62312
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microSD Card and SD Card Speed class rating

ClassWrite Speed (MB/s)Read Speed (MB/s)RatingVideo Recording
Class 22 MB/s2.013×SD video
Class 44 MB/s4.026×HD video
Class 56 MB/s6.040×HD video
Class 1010 MB/s10.066×Full HD video
UHS Speed Class 1 (U1)10 MB/s--Real-time broadcasts and large HD video files (UHS bus)
UHS Speed Class 1 (U3)30 MB/s--4K video files (UHS bus)

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8 comments on “10 microSD and SD Cards Read Write Speed Comparison

  1. Gravatar

    which is the The Fastest Memory Cards Money Can Buy? as in speed of the read and write? which brand?

    • Gravatar

      With speeds up to 60MB/s read and 35MB/s write, this card is ideal … the Kingston SD10A/64GB card

  2. Gravatar
    Amazon [ Reply ]

    best SD card for professional photographer?

  3. Gravatar
    nanana [ Reply ]

    How Important is the Speed of Your Camera’s Memory Card?

  4. Gravatar

    Kingston Elite Pro High Speed SD is the best among the best

    • Gravatar

      Transcend Class 10 is the best!!!!

  5. Gravatar
    photography DSLR [ Reply ]

    SanDisk Extreme Pro UHS-1 vs 32GB Sony Memorystick, which is the fastest?

  6. Gravatar

    the best card is the one that reads and write at 100mb/s

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