Anyway,now I have a so called slow Kingston card and a fast Transcend card so I performed some test and calculations on the PC.
MiniSD Card speed tests
Equipment
- Standard USB2.0 Card reader on Windows XP (actually CF reader with adaptors)
- Standard Kingston MiniSD
- High Speed 80x Transcend MiniSD
- Test file size 8,900,760 bytes
- Read/write test using copy command line and timers
- Speed will be measures in Kilobytes per seconds (1024bytes)
i.e. filesize / 1024 / time-in-seconds
Writing
Fast Transcend Elapsed: 0:00:09.63 ~ 902.6kbps
Slow Kingston Elapsed: 0:00:09.66 ~ 899.8kbps
Reading
Fast Transcend Elapsed: 0:00:05.74 ~1514.3kbps
Slow Kingston Elapsed: 0:00:11.92 ~ 729.2kbps
Results
- no difference in write speeds
- read speeds doubled by Transcend 80x card
I think the results are pretty clear, but to more useful we should perform these tests on the PPC (if I had the tools).
I was also seriously considering a Sandisk MiniSD instead of the Transcend, but didn't know about it's performance (though I swear by their reliability for my cameras). Can anyone test the Sandisk MiniSDs?