it looks like that 6 MB/s number is based on the time from shutter release to the activity light stopping (3.6s). however, they note that there is a write delay of 1.9 seconds, so the actual write speed to the card would be over 12MB/s (in 1.7s).
in the k10d review the spelled this out better and calculated the write speed at over 10MB/s (3.1s & 1.3s).
i have a Sandisk Extreme III 2.0GB card and have never been able to match the continuous shooting performance dpreview quotes. i get the same rate (i think), but i can not shoot a jpeg burst until the card fills up - after a certain number it just stops. my card is the same one they used in their review, so i don't know what's up with that.
so, i would definitely echo ftpaddict's advice.
|