You can read more about TweakTown's Storage Product Testing Workstation and the procedures followed to test products in this article.
For this test we whipped out our trusty Lenovo T61p and used its built in card reader that is capable of reading up to 35MB/s.
ATTO Baseline Performance
Version and / or Patch Used: 2.34
ATTO is used by many disk manufacturers to determine the read and write speeds that will be presented to customers.
In ATTO we found that the Silicon Power SDHC Class 10 32GB to be capable of reading up to 21MB/s and writing nearly as fast, 19.5MB/s. This is well over the rated speed of 10MB/s.