Raspberry Pi SD Card Tests

Posted by {"display_name"=>"greg", "login"=>"greg", "email"=>"greg@udon.org", "url"=>""} on March 25, 2016 · 1 min read

There’s an excellent benchmarking post on SD card performance on Raspberry Pi’s by Jeff Geerling. These are the results of tests on my SD cards.

I’ve created a script that runs Jeff’s test here.

hdparm is a sequential read test, nice for quick boot dd write is a block read/write test

Type Device hdparm dd write 4k rand read 4k rand write
USB SSD WD PiDrive 314 17.93 MB/s 36.3 MB/s 0.466 MB/s 1.5 MB/s
Micro SDHC 16GB Samsung Pro tbd tbd tbd tbd
USB 128GB SanDisk USB 33.25 MB/s 21.7 MB/s 2.53 MB/s 1.53 MB/s
USB 64GB Trascend USB 35.56 MB/s 15.2 MB/s 4.08 MB/s 0.62 MB/s
Micro SDHC 32GB Samsung EVO 20.17 MB/s 15.0 MB/s 8.61 MB/s 3.05 MB/s
Micro SDHC 8GB SanDisk 21.64 MB/s 9.8 MB/s 7.51 MB/s 0.76 MB/s
Micro SDHC 32GB GSkill 20.6 MB/s 16.3 MB/s 4.0 MB/s 0.6 MB/s
Micro SDHC 16GB Samsung EVO 9.82 MB/s 11.7 MB/s    
Micro SDHC 32GB SP 17.83 MB/s 10.3 MB/s 2.5 MB/s 0.25 MB/s