Such "X" speeds are comparison to the 1X speed of the CD PLAYERS. Great marketing idea but in short, there is a stock speed of SD cards and if your camera has this feature, then the speed is sufficient.
Best of luck,
Bob
I am looking into purchasing a new digi Cam with Video/audio capability. However my question is with the flash memory cards.
I have noticed recently new SD cards with speed ratings of 45X , 60X and higher. Does the speed of the Flash memory card play any role when recording video with sound in the camera, or is the memory speed simply only utilized when using a card reader.
Tnx

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