In another USB2 Reader (Systec) I come with the Lexar during normal writing on almost 10MB / s, with all the tricks (Linux Kernel 3.0, dd bs = 65536 = Direct oflag of = FILE IM File System) to 11.5MB / s , So much for the enclosed USB stick.
In Systec 19MB / s read, 9.9 (11.5) while writing. A Samsung is to compare a little bit slower in reading, and writing comes to an average of 12 MB / s (17.5!), Also in the Systec, normal cp -r (Values in parentheses: dd from above).
To use the test: reading or writing 14GB in 8 files at optimization for Flash memory (writing helpful: cd / sys / block / device / queue && echo 0> rotational && echo noop> Scheduler).
A conspicuous feature of both cards is the high read-write speed at the beginning (special treatment for FAT?), Which is then no longer quite achieved even longer with some places, deep slumps.
Conclusion:
okay for smartphone use. Hoping for a decent life and will hold good backups :)
