The interface benchmark reveals the maximum throughput of each of the cards. Note that this is usually limited by the card reader devices, as we didn’t find one capable of delivering more than 19.7 MB/s transfer rate for the cards via USB 2.0. We even tried an IDE card reader by Addonics, but it wasn’t faster than our Transcend M5.
Read transfer performance is limited by the card reader’s performance (which is a general issue), but write performance is much more interesting.
The most significant performance differences can be found in the write throughput benchmark, as the results vary between 9 MB/s and 18.6 MB/s.
- SD Memory Cards for Professionals
- Kingston Class 4 and Class 6, 32 GB and 8 GB
- Lexar Platinum II and Professional
- OCZ SDHC 8 GB, Patriot SDHC 16 GB
- PNY Optima and Optima Pro (32 GB, 4 GB)
- SanDisk Extreme III 4 GB, Silicon Power SDHC 16 GB
- Transcend Class 6 16 GB, 150X 4 GB
- Test Setup and Card Reader, Considerations
- Access Time, I/O Performance
- Interface Performance, Throughput
- Comparison Table