Here are some speed results of speed of two sd cards on two different Raspberry Pis (old 256MB and new 512MB one). I followed methodology listed on http://elinux.org/RPi_SD_cards: Write speed sync; time dd if=/dev/zero of=~/test.tmp bs=500K count=1024; time sync Read speed dd if=~/test.tmp of=/dev/null bs=500K count=1024 And here are the results: SanDisk Extreme class 10 UHS-1… Continue reading Speed tests of SD cards on Raspberry Pi