Well thats interesting, but I have a question. I am interested in this SD card for my new Sony camera, and it says its a class 1, which according to your chart isnt great. But on the front of the card it specifically states that its 45MB/s read/write speed. But that would be a class 45 according to the chart. Why?
Here is the card in question:
http://www.amazon.com/SanDisk-SDSDXP1-016G-A75-16GB-Extreme-Memory/dp/B004LB5AUY/ref=sr_1_1?ie=UTF8&qid=1309387697&sr=8-1







