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!
Comments
SanDisk propose ?ɬ©galement des cartes Extreme III. Avec un EOS 350D, en RAW+JPEG, il soutient assez bien le choc pour une dizaine de photos en rafale.
Posted by: Le tam tam :: 23.06.06 11:06
Sure there are more performant CF cards than the Sandisk ultra II.
I based my decision to buy an ultra II card on a comparison by Rob Galbraith on www.robgalbraith.com/bins/multi_page.asp?cid=6007-7699 and on the prices found on www.speicher-shop.ch.
extreme III ?¢‚Ǩ‚Äú 6.263 MB/sec ?¢‚Ǩ‚Äú Fr. 134.10
ultra II ?¢‚Ǩ‚Äú 5.695 MB/sec ?¢‚Ǩ‚Äú Fr. 96.30
This makes, on a Canon 350D, a performance gain of ~10%, for a price raise of ~40%. Which I am not ready to pay for. Simple math, but after all, each gotta make his own choice.
Posted by: damian :: 24.06.06 1:42