flash drive speed
| Flash drive make + model | write speed according to manufacturer |
| IBM Microdrive CF 1GB | 7.5 MB/s |
| Sandisk ultra II CF 2GB | 9.0 MB/s |
| Sandisk SD 1GB | ? MB/s |
| PNY Technologies SD 0.5GB | ? MB/s |
continuous write MacBook Pro to flash using LaCie Universal Media Drive USB 2.0. Test command: $ date && cp -v /256mb.dmg /Volumes/EOS_DIGITAL/ && date
| Flash drive make + model | time for 256 MB | resulting write speed |
| IBM Microdrive CF 1GB | 114 s | 2.2 MB/s |
| Sandisk ultra II CF 2GB | 50 s | 5.1 MB/s |
| Sandisk SD 1GB | 52 s | 4.9 MB/s |
| PNY Technologies SD 0.5GB | 60 s | 4.3 MB/s |
continuous write Canon 350D to flash 20 files RAW 7,2 MB, total size 144 MB, shot in continous mode, no AF, fixed AV (3.5) and TV (1/1000s), only starting to count after internal buffer was filled (5 pictures minimum).
| Flash drive make + model | time for 144 MB | resulting write speed |
| IBM Microdrive CF 1GB | 46 s | 3.1 MB/s |
| Sandisk ultra II CF 2GB | 24 s | 6.0 MB/s |
When using continuous shot mode or shooting pictures in very small intervals, you can take about twice as many pictures with the Sandisk ultra II than with the IBM Microdrive.
What do we learn? It matters which CF card you use!
