In January, OWC announced their new Atlas S Pro V90 UHS-II SD Cards, available in 32GB, 64GB, 128GB and 256GB capacities. They’re priced very competitively, too – that is to say, they’re less expensive than many of their V90 competitors but still a little more expensive than V60 UHS-II cards.
As V90 cards, they guarantee sustained write speeds of at least 90MB/sec. According to OWC, real-world testing has provided write speeds of up to 276MB/sec and read speeds of up to 290MB/sec. Such claims are easy enough to verify – at least, one would think so – so when OWC offered to send us some to try out, we decided to put these speeds to the test ourselves.
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