SanDisk has announced a new 64GB Extreme Pro SDXC UHS-I card to complement the existing line of 8GB to 32GB UHS-I cards announced earlier this year. With a max write speed of 90MB/s and 95MB/s read speed, the new 64GB UHS-I card blows away the Extreme Pro UHS-I cards that were announced in January, which clocked in at 45MB/s.
While there currently may not be any DSLRs that can take full advantage of the 90MB/s write speed (not sure about the new Sony A77), expect that to change as more manufacturers add UHS-I support. Those who will see the biggest benefit from these cards are those who shoot tons of video. The 95MB/s read speed will allow you to more quickly transfer those packed full SD cards using SanDisk’s new USB 3.0 All-in-One card reader announced alongside the new 64GB Extreme Pro SDXC card.
While SanDisk has the new 64GB card priced at $499 on its website, expect that price to go down to something more reasonable soon. For the sake of reference, the 32GB version is currently $129 at B&H Photo.
If you want to read more about UHS and other SD card acronyms and speed ratings, check out my prior post on Demystifying SD Cards.