Let's get this out of the way right up front: Sandisk's new UHS-I SDHC cards are fast but not that fast. So for all the talk of "extreme" and "pro" just remember that the claimed 45MB/s read and write performance pales in comparison to Toshiba's own UHS-I cards announced back in September with staggering 95MB/s read and 80MB/s write speeds. Still, they're fast enough to capture HD video from the latest DSLRs and certainly faster than anything touting a Class
