The two SanDisk Extreme models, 64GB and 128GB, can transfer data at 45MBps. That's less than half the speed of the company's top-end Extreme Pro line of SD cards at 95MBps, but it should be good enough for many photographers and videographers.
The high capacity comes with a price premium--prices for the cards are $200 and $400--but could be useful for those shooting lots of video or traveling away from a computer. And if you're shooting raw photos--my camera's weigh in at 30MB apiece, typically--this card will hold more than 4,000 still images.
Read more:
http://www.cnet.com/8301-33363_1-573...#ixzz1jMlIZqyX
Now I don't have to take my laptop to continuously save all my pictures!