What is the difference between these as cards?

Memory Cards SD | microSD | CFast | CFexpress | CompactFlash
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@Mutey Great question

  • One is 300 MB/s Read and 300 MB/s Write
  • One is 300 MB/s Read and write speeds up to 260MB/s
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The 64GB SanDisk Extreme PRO SD UHS-II Card (V90) is fast, perfect for Full HD and 4K video with 300MB/s write speeds. The 64GB SDXC version offers similar performance and supports larger capacities than the older SDHC format.