SD compatibility list

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Note: always measure read speed with this command:

in left slot:

  • dd if=/dev/mmcblk0 of=/dev/null bs=4MiB count=100

in right slot:

  • dd if=/dev/mmcblk1 of=/dev/null bs=4MiB count=100


If you can DESTROY your data, you can test write speed with this:

in left slot (be careful, you will need to create a new partition table!):

  • dd if=/dev/zero of=/dev/mmcblk0 bs=4MiB count=100


SDHC card brand Card size Card class Full name URL fat32 is working? ext2/3/4 are working? read speed MB/sec write speed MB/sec Notes
Kingston 32GB class 10 class 10, kingston 32GB (red) http://images.google.com/images?q=class+10+kingston+32GB like this, but 32GB: http://www.komputronik.pl/index.php/product/101490/Sprzet_komputerowy/Podzespoly_PC/Secure_Digital_16GB_Kingston_High_Capacity_Class_10.html yes no 15.2 12.4 doesn't have badblocks, seems that "Flash Translation Layer" is not suitable for ext filesystems
Pretec 32GB class 10 class 10, Pretec 32GB 233x (white/green) http://images.google.com/images?q=class+10+pretec+32GB+233x yes no 14.1 ? doesn't have badblocks, seems that "Flash Translation Layer" is not suitable for ext filesystems
Kingston 1GB unknown Kingston 1GB (blue) looks very similar to this one, except that I have 1GB: http://www.komputronik.pl/index.php/product/26645/Sprzet_komputerowy/Podzespoly_PC/Secure_Digital_2GB_Kingston.html yes yes 12.5 ? ok
Pretec 4GB 10 Class 10, Pretec 4GB, 233x (white/green) http://images.google.com/images?q=class+10+pretec+4GB+233x yes yes - I had very few fsck problems, and after several tries running fsck, they eventually got corrected. 14.0 ? very similar to that broken 32GB pretec. Except that this one almost works good.