This is another article from B&H Photo Video superstore. It’s the third time that they have explained the difference between the various memory cards used in our digital cameras.
One item you should remember is what the different speed indicators mean. Because one refers to the short burst speed of the memory card and the other refers to the continuous read/write speed of the card. If you are using your camera to create movies then the continuous read/write speed is the important specification.
Here’s the link: The Fastest Memory Cards Money Can Buy