Memory Card Readers and Memory Cards Sequential Read Rates and Random Access Times

7.43

7.57

7.53

0.87

5.08

1.58

7.54

5.50

5.43

5.66

5.57

1.61

15.63

2.40

5.59

3.96

6.72

6.85

6.81

1.00

5.99

1.71

6.81

2.98

6.72

6.85

6.81

0.99

5.95

1.71

6.81

2.98

6.72

6.85

6.81

0.98

5.96

1.71

6.81

2.98

6.81

6.85

6.84

0.99

2.23

1.69

6.83

2.99

2.17

2.19

2.17

1.52

8.05

2.25

5.18

5.29

5.23

1.10

6.74

1.70

5.26

4.64

5.07

5.74

5.67

1.48

13.46

2.22

5.73

4.06

2.61

2.63

2.62

1.09

6.47

1.77

2.60

2.63

2.61

1.13

6.64

1.83

4.36

4.79

4.68

0.39

1.33

1.03

4.83

3.49

Kingston CF 1GB

6.37

6.51

6.47

1.00

5.94

1.63

6.37

6.52

6.47

0.99

5.98

1.63

5.13

5.26

5.23

1.10

6.52

1.63

5.49

5.77

5.69

1.48

13.34

2.13

2.53

2.63

2.55

1.11

6.71

1.76

4.69

4.85

4.81

0.39

1.31

0.95

Transcend CF 30x 1GB

4.91

5.63

5.59

0.98

4.61

1.37

5.54

4.71

Sawtooth pattern barely visible

4.13

4.87

4.78

1.75

15.45

2.24

4.75

3.79

Negative peak at start, sawtooth pattern barely visible

4.80

5.56

5.52

1.09

5.81

1.48

5.45

3.01

Negative peak at start, 4 cycles of inverse sawtooth pattern

4.76

5.55

5.51

1.09

5.68

1.49

5.46

3.01

Negative peak at start, 4 cycles of inverse sawtooth pattern

4.86

5.56

5.52

1.09

5.73

1.48

5.45

3.01

Negative peak at start, 4 cycles of inverse sawtooth pattern

4.85

5.55

5.50

1.10

1.97

1.46

5.44

3.02

Negative peak at start, inverse sawtooth pattern is fading from cycle to cycle

2.15

2.19

2.17

1.62

7.71

2.06

Sawtooth pattern visible in jitter

4.35

4.86

4.80

1.24

6.49

1.57

4.78

4.19

Negative peak at start, no pattern visible

4.20

4.96

4.88

1.48

13.09

1.98

4.87

3.90

Negative peak at start, sawtooth pattern barely visible

2.58

2.63

2.61

1.22

6.60

1.62

Sawtooth pattern visible in jitter

2.58

2.63

2.61

1.24

6.47

1.65

Sawtooth pattern visible in jitter

2.44

2.49

2.47

1.37

7.00

1.80

Sawtooth pattern visible in jitter

4.12

4.56

4.49

0.43

1.13

0.79

4.49

3.47

Negative peak at start, 4 cycles of inverse sawtooth pattern perfectly visible

RiData CF 25x 512MB (1)

4.79

4.88

4.85

0.98

5.06

1.49

4.83

2.77

4.38

4.63

4.56

1.74

15.59

2.35

4.76

4.85

4.83

1.09

5.86

1.60

4.76

4.85

4.83

1.09

5.84

1.60

4.75

4.85

4.83

1.09

5.84

1.60

4.81

4.85

4.84

1.09

2.11

1.60

4.80

2.62

2.13

2.19

2.17

1.64

7.71

2.23

4.68

4.81

4.77

1.24

6.62

1.65

4.50

4.72

4.66

1.61

13.46

2.11

2.57

2.64

2.62

1.14

6.34

1.71

2.57

2.64

2.62

1.24

6.23

1.76

2.42

2.49

2.47

1.37

7.12

1.88

4.20

4.77

4.60

0.50

1.25

0.97

2.75

RiData CF 25x 512MB (2)

4.79

4.88

4.85

0.98

4.94

1.48

4.83

2.88

4.39

4.64

4.56

1.62

15.62

2.35

4.76

4.85

4.82

1.09

5.87

1.61

4.75

4.85

4.83

1.09

5.83

1.61

4.75

4.85

4.82

1.09

5.84

1.61

4.81

4.85

4.84

1.10

2.10

1.60

4.80

2.72

2.13

2.19

2.17

1.65

7.84

2.23

4.69

4.81

4.77

1.23

6.63

1.66

4.50

4.73

4.66

1.50

48.74

2.13

2.58

2.64

2.62

1.21

6.60

1.71

2.57

2.64

2.62

1.24

6.39

1.76

4.22

4.77

4.61

0.49

1.30

0.98

4.74

2.90

Transcend CF 25x 512MB (1)

4.78

4.87

4.84

0.97

4.86

1.49

4.83

2.83

4.37

4.63

4.55

1.74

15.75

2.34

4.75

4.85

4.82

1.09

5.84

1.61

4.74

4.85

4.81

1.10

5.84

1.61

4.74

4.85

4.81

1.10

5.84

1.61

4.82

4.85

4.84

1.09

2.11

1.60

4.79

2.73

2.13

2.19

2.17

1.64

7.84

2.23

4.68

4.80

4.77

1.22

6.62

1.66

4.50

4.73

4.66

1.62

13.33

2.10

2.57

2.64

2.62

1.14

6.73

1.71

2.57

2.64

2.62

1.24

6.53

1.76

2.42

2.50

2.47

1.37

7.12

1.87

4.34

4.72

4.62

0.49

1.25

0.98

4.75

2.84

Transcend CF 25x 512MB (2)

4.77

4.86

4.84

0.97

4.98

1.49

4.83

2.92

4.38

4.63

4.55

1.74

15.50

2.35

4.72

4.82

4.79

1.10

5.84

1.60

4.73

4.82

4.79

1.10

5.80

1.60

4.72

4.83

4.79

1.09

5.85

1.61

4.81

4.85

4.83

1.09

2.07

1.60

4.80

2.74

2.13

2.19

2.17

1.64

7.99

2.23

4.69

4.80

4.77

1.23

6.62

1.68

3.98

4.72

4.66

1.50

13.22

2.10

2.57

2.64

2.62

1.21

6.46

1.71

2.57

2.64

2.62

1.24

6.59

1.76

4.35

4.72

4.62

0.49

1.26

0.98

4.75

2.92

Lexar CF 8x 16MB (1) 2175A

4.75

4.97

4.95

1.02

4.59

1.20

4.92

1.25

3.86

4.49

4.44

1.74

15.22

2.04

4.39

1.18

4.66

4.92

4.89

1.10

5.46

1.26

4.86

1.16

4.66

4.92

4.89

1.12

5.50

1.26

4.87

1.16

4.66

4.92

4.91

1.10

5.48

1.26

4.87

1.16

4.88

4.92

4.92

1.10

1.69

1.25

4.89

1.16

2.09

2.16

2.14

1.62

7.47

1.86

2.13

1.19

4.67

4.92

4.89

1.10

5.21

1.25

4.78

1.25

4.01

4.58

4.53

1.52

12.84

1.77

4.47

1.18

2.44

2.53

2.51

1.22

6.24

1.40

2.53

1.21

2.44

2.53

2.51

1.23

6.35

1.40

2.53

1.21

5.20

5.21

5.20

0.44

0.75

0.55

5.17

1.23

Lexar CF 8x 16MB (2) 2177A

4.19

4.38

4.36

0.87

4.26

1.00

4.28

1.30

3.64

4.20

4.12

1.62

14.97

1.79

4.08

1.22

4.13

4.34

4.32

0.99

5.33

1.12

4.23

1.21

4.13

4.34

4.31

0.97

5.34

1.09

4.24

1.21

4.14

4.34

4.33

0.98

5.31

1.10

4.24

1.21

4.32

4.34

4.34

0.97

1.48

1.06

4.25

1.21

3.05

3.21

3.18

1.39

7.21

1.50

3.10

1.25

4.16

4.43

4.39

0.96

5.74

1.05

4.08

1.30

3.77

4.28

4.21

1.27

12.72

1.53

4.16

1.23

3.51

3.67

3.66

0.98

5.97

1.13

3.64

1.27

3.50

3.67

3.65

0.99

5.72

1.13

3.65

1.27

4.54

4.55

4.55

0.32

0.53

0.32

4.45

1.26

SanDisk CF Ultra 512MB

2.00

2.50

2.43

1.71

62.34

53.82

A little drop between 50% and 77%

2.00

2.50

2.43

1.71

62.33

53.85

A little drop between 50% and 77%

1.72

2.12

2.07

2.14

64.00

54.09

No drop in speed

1.96

2.45

2.39

1.72

63.97

54.83

No drop in speed

1.94

2.47

2.39

2.11

69.46

54.43

A little drop between 50% and 77%

1.97

2.46

2.39

1.74

62.96

53.90

A little drop between 50% and 77%

2.07

2.56

2.50

0.95

57.97

53.13

A little drop between 50% and 64%

SanDisk CF Ultra 256MB

2.11

2.46

2.41

2.21

43.73

35.61

2.39

2.56

2.00

2.39

2.32

2.98

53.84

36.78

2.31

2.30

2.09

2.45

2.39

2.34

44.48

35.74

2.38

2.33

2.10

2.44

2.39

2.34

44.59

35.78

2.38

2.32

2.08

2.45

2.39

2.34

44.37

35.68

2.38

2.36

2.12

2.45

2.40

2.34

40.71

35.62

2.39

2.33

1.82

2.08

2.04

2.76

46.35

36.32

2.04

2.12

2.08

2.43

2.38

2.34

44.75

35.86

2.35

2.48

2.02

2.43

2.36

2.74

51.46

36.32

2.34

2.36

2.05

2.40

2.35

2.36

44.71

35.81

2.35

2.24

2.05

2.40

2.35

2.36

45.08

35.82

2.35

2.24

SanDisk CF 16MB

1.90

1.93

1.93

2.34

5.97

2.38

1.92

0.85

1.77

1.89

1.86

2.99

16.47

3.30

1.85

0.81

1.88

1.93

1.92

2.46

6.71

2.51

1.90

0.82

1.88

1.93

1.92

2.46

6.76

2.51

1.90

0.82

1.88

1.93

1.92

2.45

6.71

2.51

1.92

0.83

1.92

1.93

1.92

2.46

2.95

2.50

1.91

0.82

1.82

1.87

1.86

2.89

8.72

3.02

1.85

0.82

1.86

1.91

1.90

2.44

7.43

2.51

1.84

0.85

1.80

1.91

1.89

2.75

13.97

2.99

1.89

0.83

1.86

1.90

1.89

2.49

7.59

2.62

1.90

0.84

1.86

1.90

1.89

2.48

7.46

2.62

1.89

0.84

1.96

2.01

1.98

0.80

2.05

0.84

IBM MD 1GB

2.55

4.32

3.54

5.47

36.67

22.04

All 11 media zones visible, little jitter

2.46

4.31

3.50

6.75

44.59

22.85

3.51

1.79

All 11 media zones clearly visible, some with little jitter

2.46

4.35

3.55

5.50

38.20

22.04

3.56

1.79

All 11 media zones perfect

2.53

4.34

3.55

5.39

36.72

22.09

3.55

1.80

All 11 media zones perfect

2.53

4.31

3.55

5.49

37.97

22.06

3.55

1.80

All 11 media zones perfect

2.46

4.31

3.55

5.35

36.76

22.06

3.55

1.80

All 11 media zones perfect

2.46

3.97

3.40

6.86

38.22

22.57

3.40

1.80

Fastest media zone clipped, second with jitter, other 9 zones perfect

2.48

4.34

3.56

5.38

40.06

22.02

3.54

1.81

All 11 media zones perfect

2.46

4.31

3.52

6.87

44.34

22.53

3.53

1.80

All 11 media zones clearly visible, some with little jitter

2.48

2.66

2.63

5.38

38.08

21.95

2.64

1.80

Slowest media zone visible, faster zones are clipped tp 2.63MB/s

2.46

2.66

2.62

5.49

38.08

22.11

2.64

1.80

Slowest media zone visible, faster zones are clipped to 2.63MB/s

2.33

2.51

2.49

5.37

36.62

22.23

No media zone pattern visible

2.46

4.44

3.47

5.39

36.66

21.40

3.45

1.70

Faster 6 media zones with jitter, slower 5 media zones OK

MuVo² Hitachi 4GB MD

3.76

6.27

5.03

0.87

40.39

20.50

5.08

2.19

Media zones 1-3 slow, zones 4-7 mirrored down, zones 8-9 OK

3.22

4.33

3.64

1.74

50.96

21.62

3.65

2.16

Media zones 1-3 slow, zones 4-7 mirrored down, zones 8-9 OK

3.50

5.57

4.54

0.99

40.14

20.78

4.55

2.18

Media zones 1-4 mirrored down, zones 5-9 OK

3.50

5.57

4.54

0.99

41.82

20.66

4.57

2.17

Media zones 1-4 mirrored down, zones 5-9 OK

3.50

5.56

4.54

0.98

39.64

20.63

4.57

2.18

Media zones 1-4 mirrored down, zones 5-9 OK

3.51

5.56

4.56

0.99

39.70

20.58

4.59

2.18

Media zones 1-4 mirrored down, zones 5-9 OK

2.35

3.48

2.80

1.50

40.12

21.32

2.83

2.18

All media zones at arbitrary values between 2.5MB/s and 3.5MB/s

3.50

5.56

4.40

1.00

41.24

20.71

4.44

2.20

Media zones 1-4 mirrored down, zones 5-9 OK

3.29

4.67

3.72

1.50

45.71

21.28

3.73

2.18

Media zones 1-3 slow, zones 4-7 mirrored down, zones 8-9 OK

2.17

2.62

2.40

1.12

40.11

20.81

2.41

2.17

Media zones 1-5 very slow, zones 6-7 irregular, zones 8-9 slow

2.17

2.61

2.40

1.13

40.00

20.88

2.41

2.17

Media zones 1-5 very slow, zones 6-7 irregular, zones 8-9 slow

3.83

6.94

5.30

0.19

569.84

20.12

All 9 media zones clearly visible, zones 6-8 a little rough

Toshiba 1.8" HD 5GB

4.19

7.13

6.21

6.39

38.36

21.85

6.35

2.66

Using PCMCIA to CF adapter: Pattern clipped to 7.1MB/s

3.58

4.89

4.60

6.49

47.21

23.04

4.60

3.85

Using PCMCIA to CF adapter: Pattern clipped to 4.8MB/s; Before: "Power Surge On Hub Port"

n/a

Using PCMCIA to CF adapter: Drive tries to spin up over and over again

n/a

Using PCMCIA to CF adapter: Drive tries to spin up over and over again

n/a

Using PCMCIA to CF adapter: Drive tries to spin up over and over again

n/a

Using PCMCIA to CF adapter: Drive tries to spin up over and over again

n/a

Using PCMCIA to CF adapter: Drive tries to spin up and stops

4.18

5.15

4.98

6.17

39.11

22.23

4.98

2.72

Using PCMCIA to CF adapter: No media zone pattern visible

3.86

5.00

4.79

6.49

45.09

22.73

4.74

3.93

Using PCMCIA to CF adapter: Pattern clipped to 4.95MB/s; Before: "Power Surge On Hub Port"

2.64

2.66

2.65

6.40

41.46

22.13

2.66

1.92

Using PCMCIA to CF adapter: No media zone pattern visible; Before: "Power Surge On Hub Port"

2.64

2.66

2.65

6.47

42.34

22.12

2.66

1.92

Using PCMCIA to CF adapter: No media zone pattern visible; Before: "Power Surge On Hub Port"

6.43

8.69

8.22

6.38

36.49

20.93

Using PCMCIA to CF adapter: All 8 media zones clearly visible

Panasonic SD 512MB

4.77

4.85

4.83

0.97

4.71

1.03

4.83

3.64

6.30

6.67

6.56

2.49

16.09

2.76

6.56

4.37

6.78

6.93

6.88

1.02

5.22

1.13

6.87

3.28

6.76

6.91

6.86

1.01

5.21

1.13

6.89

3.28

6.76

6.91

6.86

1.01

5.34

1.13

6.89

3.30

4.49

4.51

4.50

1.38

1.94

1.50

4.50

1.89

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

8.13

8.33

8.28

1.49

7.22

1.53

8.26

4.78

3.14

3.22

3.20

1.21

5.99

1.26

3.21

3.99

6.59

6.95

6.84

2.12

13.47

2.33

6.83

4.63

6.07

6.21

6.17

0.98

5.69

1.08

6.19

4.26

6.08

6.22

6.17

0.97

5.73

1.08

6.19

4.33

4.61

4.72

4.69

0.76

1.00

0.78

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

Panasonic SD 256MB

6.76

6.93

6.88

0.97

5.37

1.12

One negative spike at 73%

6.72

6.91

6.86

0.97

5.39

1.12

One negative spike at 72%

8.14

8.77

8.29

1.48

7.09

1.53

One positive spike at 72%

3.15

3.24

3.20

1.12

6.00

1.25

One positive spike around 72%

Fail

Card not recognized

6.08

6.26

6.19

0.87

5.73

1.08

One small positive spike at 72%

4.58

4.74

4.69

0.68

1.00

0.78

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

SanDisk SD U-II 256MB

5.46

6.72

6.50

2.49

55.46

35.15

6.49

5.21

15 negative spikes to 5.8MB/s

5.81

6.89

6.72

0.97

44.71

33.11

6.75

3.42

15 negative spikes to 6MB/s

5.81

6.88

6.70

0.96

44.71

33.12

6.77

3.42

15 negative spikes to 6MB/s

5.81

6.88

6.71

0.96

44.96

33.13

6.77

3.42

15 negative spikes to 6MB/s

3.89

4.52

4.45

1.37

41.58

33.51

4.45

1.93

Using 4 in 1 PCMCIA and PCMCIA to CF adapter: 15 negative spikes to 4MB/s

7.25

8.62

8.38

1.48

46.84

33.81

8.27

5.79

15 negative spikes to 7.6MB/s

2.73

3.23

3.18

1.11

45.51

33.43

3.18

4.50

15 negative spikes to 2.9MB/s

5.72

7.02

6.78

2.23

52.98

34.73

6.76

5.40

15 negative spikes to 6MB/s; Card only recognized after several tries

5.31

6.25

6.12

0.97

45.34

33.24

6.14

5.14

15 negative spikes to 5.5MB/s

5.32

6.26

6.12

0.97

45.47

33.24

6.14

5.14

15 negative spikes to 5.5MB/s

4.03

4.73

4.64

0.70

41.01

33.07

Using 4 in 1 PCMCIA and PCMCIA to CF adapter: 15 negative spikes

Transcend SD 256MB

5.26

7.14

6.75

1.48

76.23

46.87

7 negative spikes, first third a little faster

2.47

3.12

3.08

1.23

74.99

46.43

7 negative spikes

4.55

6.24

5.94

2.12

82.16

47.77

7 negative spikes, first third a little faster

4.31

5.60

5.51

0.93

74.72

46.23

7 negative spikes

SanDisk MS Pro 256MB

3.67

3.76

3.73

0.88

5.86

1.31

Second half a little slower than the first

3.66

3.76

3.73

0.88

5.69

1.31

Second half slower than the first half

n/a

Not supported

1.42

1.46

1.45

1.21

6.65

1.57

Last 25% a little slower

n/a

Not supported

Fail

Card not recognized

PixoMedia SM 32MB (1)

5.60

5.74

5.71

1.09

4.73

1.17

5.58

0.75

3.93

4.55

4.35

2.61

16.85

3.00

3.96

0.69

3.96

4.13

4.02

1.36

5.88

1.74

3.96

4.13

4.03

1.35

5.95

1.70

3.95

4.13

4.02

1.37

5.87

1.75

3.61

3.62

3.61

1.21

2.07

1.50

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

1.01

3.22

3.01

1.61

462.75

201.48

2.99

0.59

2.85

2.92

2.90

0.89

5.74

1.00

2.89

0.92

4.21

4.83

4.63

2.25

14.14

2.61

4.26

0.58

2.26

3.53

3.43

1.16

139.33

59.67

3.48

0.65

2.29

3.52

3.43

1.18

139.34

59.72

3.47

0.24

3.73

3.74

3.73

0.53

1.17

0.84

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

PixoMedia SM 32MB (2)

5.59

5.74

5.71

1.09

4.82

1.17

5.57

0.76

3.93

4.55

4.35

2.62

16.84

3.00

3.96

0.69

3.96

4.13

4.03

1.35

5.97

1.70

3.95

4.13

4.03

1.37

5.97

1.76

3.61

3.62

3.62

1.22

2.11

1.50

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

2.99

0.60

2.90

0.93

4.26

0.58

2.29

3.53

3.43

1.21

139.26

59.67

3.47

0.65

3.45

0.65

PixoMedia SM 32MB (3)

5.60

5.74

5.71

1.09

4.74

1.17

5.51

0.75

3.95

4.56

4.37

2.61

16.84

3.00

3.92

0.68

3.95

4.13

4.03

1.35

5.96

1.70

3.95

4.13

4.03

1.37

5.85

1.76

3.60

3.62

3.61

1.21

2.08

1.50

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

2.97

0.59

2.90

0.92

4.23

0.58

2.26

3.53

3.43

1.15

139.46

59.67

3.45

0.64

3.45

0.64

HAMA SM 128MB

3.95

4.13

4.01

1.37

6.00

1.75

One positive spike at start

3.95

4.13

4.01

1.37

5.97

1.75

One positive spike at start

1.26

3.22

2.99

1.60

331.32

281.58

7 negative spikes of about 1.25MB/sec

1.77

2.94

2.84

0.95

167.62

106.32

7 negative spikes of about 2MB/sec

0.12

4.80

2.68

2.34

2484.35

1796.73

7 negative spikes of about 128kB/sec

2.28

3.56

3.45

1.22

139.20

115.03

7 negative spikes of about 2.3MB/sec

3.73

3.74

3.73

0.52

1.16

0.90

Using 4 in 1 PCMCIA and PCMCIA to CF adapter: 14 negative spikes, irregular pattern

Olympus SM 32MB (1)

5.60

5.74

5.71

1.09

4.96

1.17

5.58

0.57

3.94

4.55

4.35

2.62

16.84

3.00

3.96

0.53

3.96

4.13

4.02

1.36

5.96

1.73

3.96

4.13

4.03

1.35

5.94

1.69

3.96

4.13

4.02

1.36

5.98

1.75

3.61

3.62

3.62

1.21

2.09

1.49

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

1.02

3.22

3.01

1.61

461.24

177.43

3.00

0.48

2.86

2.92

2.90

0.95

5.69

1.00

2.90

0.67

4.21

4.81

4.62

2.15

14.37

2.61

4.26

0.47

Error

3.47

0.51

Card seems to work, but benchmark tool reports error

Fail

3.44

0.51

Card not recognized

3.73

3.74

3.73

0.53

1.22

0.84

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

Olympus SM 32MB (2)

5.61

5.74

5.71

1.08

4.83

1.17

5.58

0.60

3.96

4.60

4.39

2.62

16.85

3.00

3.99

0.55

3.96

4.13

4.03

1.35

5.96

1.70

3.95

4.13

4.03

1.36

5.85

1.75

3.61

3.62

3.62

1.21

2.06

1.49

Using 4 in 1 PCMCIA and PCMCIA to CF adapter

3.00

0.49

2.90

0.70

4.29

0.48

Error

3.47

0.53

Card seems to work, but benchmark tool reports error

Fail

3.47

0.22

Card not recognized

Olympus SM 8MB

5.05

5.32

5.30

1.09

4.85

1.15

5.13

0.68

3.12

3.55

3.49

2.62

16.38

2.83

3.30

0.71

3.82

4.16

4.02

1.33

5.75

1.66

3.82

4.16

4.01

1.36

5.84

1.71

2.70

0.55

2.86

0.85

3.61

0.57

3.30

3.45

3.43

1.22

5.95

1.27

3.40

0.55