SanDisk SDSQXBZ-064G-ANCMA not as fast as advertised (170MB/s read + 90MB/s write). 90MB/s read + 75MB/s write. It's still faster than older devices. My hardware is an i7-2600K processor, 8GB RAM, Windows 7 Pro (64-bit) and a SanDisk ImageMate PRO card reader/writer. USB 3.0 exFAT file system on the card. Speeds measured on AJA System Test 2.1.0 - x64 and ATTO 4.000.4002 The time to fully format the microSD card was 14 minutes: 25 seconds. It was worth it, but they should state what hardware and software was used for the really fast speeds they claimed. with the caution mentioned above.
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