This is a "Plus" card but rated class 4 unlike the MB-MP8GA that looks almost identical. The coloring and logos almost match except for the class marks. This card's internals are different.
MB-MP8GA results for comparison: http://lists.linaro.org/pipermail/flashbench-results/2012-August/000322.html
andrew@brick:~/git/flashbench$ head /sys/block/mmcblk0/device/* 2>/dev/null | grep -v ^$ ==> /sys/block/mmcblk0/device/block <== ==> /sys/block/mmcblk0/device/cid <== 1b534d30303030301004b2901000cc00 ==> /sys/block/mmcblk0/device/csd <== 400e00325b5900003ac57f800a400000 ==> /sys/block/mmcblk0/device/date <== 12/2012 ==> /sys/block/mmcblk0/device/driver <== ==> /sys/block/mmcblk0/device/erase_size <== 512 ==> /sys/block/mmcblk0/device/fwrev <== 0x0 ==> /sys/block/mmcblk0/device/hwrev <== 0x1 ==> /sys/block/mmcblk0/device/manfid <== 0x00001b ==> /sys/block/mmcblk0/device/name <== 00000 ==> /sys/block/mmcblk0/device/oemid <== 0x534d ==> /sys/block/mmcblk0/device/power <== ==> /sys/block/mmcblk0/device/preferred_erase_size <== 4194304 ==> /sys/block/mmcblk0/device/scr <== 0235800300000000 ==> /sys/block/mmcblk0/device/serial <== 0x04b29010 ==> /sys/block/mmcblk0/device/subsystem <== ==> /sys/block/mmcblk0/device/type <== SD ==> /sys/block/mmcblk0/device/uevent <== DRIVER=mmcblk MMC_TYPE=SD MMC_NAME=00000 MODALIAS=mmc:block
andrew@brick:~/git/flashbench$ sudo fdisk -l /dev/mmcblk0[sudo] password for andrew:
Disk /dev/mmcblk0: 7888 MB, 7888437248 bytes, 15407104 sectors Units = sectors of 1 * 512 = 512 bytes Sector size (logical/physical): 512 bytes / 512 bytes I/O size (minimum/optimal): 512 bytes / 512 bytes Disk label type: dos Disk identifier: 0x00000000
Device Boot Start End Blocks Id System /dev/mmcblk0p1 8192 15407103 7699456 b W95 FAT32
andrew@brick:~/git/flashbench$ factor 7888437248 7888437248: 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 2 7523
andrew@brick:~/git/flashbench$ sudo ./flashbench -a /dev/mmcblk0 --blocksize=1024 --count=100 align 2147483648 pre 510µs on 753µs post 599µs diff 199µs align 1073741824 pre 495µs on 723µs post 584µs diff 183µs align 536870912 pre 501µs on 746µs post 555µs diff 218µs align 268435456 pre 501µs on 728µs post 592µs diff 182µs align 134217728 pre 490µs on 713µs post 583µs diff 177µs align 67108864 pre 485µs on 703µs post 553µs diff 184µs align 33554432 pre 498µs on 706µs post 582µs diff 166µs align 16777216 pre 492µs on 705µs post 576µs diff 171µs align 8388608 pre 491µs on 702µs post 573µs diff 170µs align 4194304 pre 489µs on 697µs post 571µs diff 168µs align 2097152 pre 485µs on 700µs post 573µs diff 171µs align 1048576 pre 488µs on 702µs post 544µs diff 186µs align 524288 pre 489µs on 703µs post 545µs diff 186µs align 262144 pre 491µs on 703µs post 546µs diff 185µs align 131072 pre 487µs on 699µs post 574µs diff 169µs align 65536 pre 473µs on 700µs post 547µs diff 190µs align 32768 pre 480µs on 719µs post 576µs diff 192µs align 16384 pre 473µs on 691µs post 571µs diff 169µs align 8192 pre 479µs on 679µs post 558µs diff 160µs align 4096 pre 552µs on 554µs post 543µs diff 6.32µs align 2048 pre 569µs on 571µs post 560µs diff 6.49µs
## 8 kiB pages, unclear erase block but should be power of 2 based off factor
andrew@brick:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4*1024*1024] --blocksize=$[8*1024] --open-au-nr=1 4MiB 8.23M/s 2MiB 8.39M/s 1MiB 8.25M/s 512KiB 8.23M/s 256KiB 8.22M/s 128KiB 8.2M/s 64KiB 8.08M/s 32KiB 7.1M/s 16KiB 5.89M/s 8KiB 3.81M/s andrew@brick:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4*1024*1024] --blocksize=$[8*1024] --open-au-nr=2 4MiB 8.33M/s 2MiB 8.18M/s 1MiB 8.19M/s 512KiB 8.24M/s 256KiB 7.95M/s 128KiB 7.77M/s 64KiB 7.33M/s 32KiB 5.86M/s 16KiB 4.4M/s 8KiB 2.62M/s andrew@brick:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4*1024*1024] --blocksize=$[8*1024] --open-au-nr=3 4MiB 8.23M/s 2MiB 8.17M/s 1MiB 8.27M/s 512KiB 8.34M/s 256KiB 8.3M/s 128KiB 8.01M/s 64KiB 7.53M/s 32KiB 5.96M/s 16KiB 4.29M/s 8KiB 2.46M/s andrew@brick:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4*1024*1024] --blocksize=$[8*1024] --open-au-nr=4 4MiB 3.85M/s 2MiB 3.82M/s 1MiB 2.95M/s 512KiB 2.96M/s ^C
## 3 linear open-au, poor compared to the MB-MP8GA's 7
andrew@brick:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4*1024*1024] --blocksize=$[8*1024] --random --open-au-nr=1 4MiB 6.56M/s 2MiB 8.71M/s 1MiB 8.24M/s 512KiB 8.46M/s 256KiB 8.41M/s 128KiB 8.29M/s 64KiB 7.71M/s 32KiB 6.72M/s 16KiB 5.13M/s 8KiB 3.12M/s andrew@brick:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4*1024*1024] --blocksize=$[8*1024] --random --open-au-nr=2 4MiB 8.57M/s 2MiB 7.98M/s 1MiB 8.41M/s 512KiB 8.4M/s 256KiB 8.34M/s 128KiB 8.07M/s 64KiB 7.46M/s 32KiB 6.06M/s 16KiB 4.35M/s 8KiB 2.47M/s andrew@brick:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4*1024*1024] --blocksize=$[8*1024] --random --open-au-nr=3 4MiB 6.56M/s 2MiB 8.1M/s 1MiB 8.46M/s 512KiB 8.39M/s 256KiB 8.3M/s 128KiB 8.07M/s 64KiB 7.57M/s 32KiB 6.01M/s 16KiB 4.26M/s 8KiB 2.52M/s andrew@brick:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4*1024*1024] --blocksize=$[8*1024] --random --open-au-nr=4 4MiB 6.73M/s 2MiB 7.87M/s 1MiB 8.38M/s 512KiB 8.36M/s 256KiB 8.25M/s 128KiB 7.98M/s 64KiB 7.49M/s 32KiB 5.91M/s 16KiB 4.38M/s 8KiB 2.66M/s andrew@brick:~/git/flashbench$ sudo ./flashbench /dev/mmcblk0 --open-au --erasesize=$[4*1024*1024] --blocksize=$[8*1024] --random --open-au-nr=5 4MiB 4.68M/s 2MiB 3.97M/s 1MiB 1.67M/s ^C
## 4 random open-au, which is more than the linear. ## I must have the erase block size wrong or something. ## Regardless, that's not very good compared to MB-MS8GA.
andrew@brick:~/git/flashbench$ sudo ./flashbench --find-fat /dev/mmcblk04MiB 2.82M/s 4.66M/s 4.76M/s 3.14M/s 4.78M/s 4.82M/s 2MiB 3.23M/s 4.78M/s 4.8M/s 3.26M/s 4.74M/s 4.78M/s 1MiB 3.27M/s 4.77M/s 4.79M/s 3.23M/s 4.78M/s 4.79M/s 512KiB 3.27M/s 4.79M/s 4.72M/s 3.23M/s 4.78M/s 4.75M/s 256KiB 3.24M/s 4.79M/s 4.78M/s 3.27M/s 4.78M/s 4.73M/s 128KiB 3.26M/s 4.78M/s 4.78M/s 3.24M/s 4.77M/s 4.81M/s 64KiB 3.26M/s 4.76M/s 4.7M/s 3.24M/s 4.74M/s 4.75M/s 32KiB 3.03M/s 4.32M/s 4.34M/s 3.06M/s 4.36M/s 4.31M/s 16KiB 2.74M/s 3.8M/s 3.74M/s 2.72M/s 3.79M/s 3.76M/s