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| p.1 #9 · Super deal: Three Samsung Pro SD 64GB cards for $99.99 |
Based on Samsung part number as well as the 64GB capacity, these should be SDXC.
It actually doesn't make any difference at all- the 'classes' and 'types' are really just compatibility references, with cards that are all much faster than any of the current specifications.
Note that these cards are too slow to keep up with the burst functions of many Canon DSLRs. I had to get the 95MB/s Sandisk cards, that are rated for 90MB/s writes, in order to get the full burst out of my 6D.