Benchmarks for new SanDisk and Samsung MicroSDs

The list was too long for the forum limit so here are the Samsung cards.

Here is a Samsung 16 GB Evo http://www.amazon.com/gp/product/B00IVPU7KE

Samsung Evo 16 GB

Type is FAT32
Card size: 15.72 GB (GB = 1E9 bytes)

Manufacturer ID: 0X1B
OEM ID: SM
Product: 00000
Version: 1.0
Serial number: 0X2A620035
Manufacturing date: 3/2014

File size 5 MB
Buffer size 512 bytes

write speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
322.44,28452,1424,1582
317.18,28356,1424,1608
316.62,26956,1424,1611
317.52,31996,1424,1606
318.11,26992,1424,1603
317.96,32592,1424,1604
318.37,33372,1424,1602
318.78,27456,1424,1600
318.71,26896,1424,1600
319.06,27464,1424,1599

read speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
501.88,2024,1004,1014
501.93,2024,1004,1014
501.88,2024,1004,1014
501.93,2024,1004,1014
501.82,2024,1004,1014

Here is the 32 GB Samsung Evo http://www.amazon.com/gp/product/B00IVPU7KE.

Samsung Evo 32 GB

Type is FAT32
Card size: 31.44 GB (GB = 1E9 bytes)

Manufacturer ID: 0X1B
OEM ID: SM
Product: 00000
Version: 1.0
Serial number: 0X780282A4
Manufacturing date: 5/2014

File size 5 MB
Buffer size 512 bytes

write speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
330.58,30080,1444,1543
328.24,29600,1492,1554
327.93,27408,1492,1555
328.69,27320,1492,1551
328.45,27052,1492,1553
327.48,43476,1492,1557
328.71,27372,1492,1552
328.75,28084,1492,1551
328.28,27376,1492,1553
328.86,35408,1492,1551

read speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
502.43,2016,1004,1013
502.38,2012,1004,1013
502.28,2016,1004,1013
502.33,2016,1004,1013
502.28,2016,1004,1013

The Samsung Pro is great on the PC and STM32 but not so much on Uno http://www.amazon.com/gp/product/B00IVPU7DG.

Samsung Pro 16 GB

Type is FAT32
Card size: 16.00 GB (GB = 1E9 bytes)

Manufacturer ID: 0X1B
OEM ID: SM
Product: 00000
Version: 1.0
Serial number: 0X9B541463
Manufacturing date: 3/2014

File size 5 MB
Buffer size 512 bytes

write speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
276.96,36204,1424,1843
257.49,37008,1492,1982
257.81,36996,1492,1980
258.64,36964,1492,1973
258.58,36040,1488,1974
258.93,36900,1492,1971
259.63,35216,1488,1966
260.17,37708,1488,1962
260.05,36068,1492,1963
260.48,36088,1492,1959

read speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
501.22,2024,1004,1015
501.17,2020,1004,1016
501.27,2016,1004,1015
501.27,2020,1004,1015
501.32,2016,1004,1015

The 32 GB Samsung Pro http://www.amazon.com/gp/product/B00IVPU7DG.

Samsung Pro 32 GB

Type is FAT32
Card size: 32.01 GB (GB = 1E9 bytes)

Manufacturer ID: 0X1B
OEM ID: SM
Product: 00000
Version: 1.0
Serial number: 0XFC5E3635
Manufacturing date: 4/2014

File size 5 MB
Buffer size 512 bytes

write speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
287.27,24024,1432,1776
278.77,24996,1496,1830
279.69,23140,1496,1824
280.09,23568,1496,1822
280.20,22452,1492,1821
281.04,22140,1496,1816
280.79,25672,1496,1817
280.99,23224,1496,1816
282.32,25372,1496,1807
282.13,26596,1496,1808

read speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
503.95,2012,1000,1010
503.85,2012,1000,1010
503.85,2008,1000,1010
503.90,2008,1000,1010
503.80,2012,1000,1010

Finally don't buy the Samsung 8 GB class 6 card http://www.amazon.com/gp/product/B00IVPU6GO. It has poor max write latency.

Samsung 8 GB class 6

Type is FAT32
Card size: 7.89 GB (GB = 1E9 bytes)

Manufacturer ID: 0X1B
OEM ID: SM
Product: 00000
Version: 1.0
Serial number: 0X450D3E3
Manufacturing date: 2/2014

File size 5 MB
Buffer size 512 bytes
Starting write test, please wait.

write speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
234.74,98936,1708,2175
244.84,104760,1716,2085
247.08,104732,1712,2066
248.74,104888,1716,2052
247.06,105728,1712,2066
249.14,105096,1716,2049
247.06,98920,1712,2066
248.81,105164,1712,2051
247.01,95652,1716,2065
248.46,104932,1712,2054

read speed and latency
speed,max,min,avg
KB/Sec,usec,usec,usec
469.85,3188,1036,1084
469.89,2560,1036,1084
469.81,2564,1036,1084
469.85,2568,1036,1084
435.17,47756,1032,1171