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SD Express cards from Samsung promise faster-than-SATA speeds for microSD devices

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Samsung's SD Express-compatible microSD cards.

Enlarge / Samsung's SD Express-compatible microSD cards. (credit: Samsung)

Big news for people who like (physically) small storage: Samsung says that it is sampling its first microSD cards that support the SD Express standard, which will allow them to hit sustained read speeds of as much as 800MB per second. That's a pretty substantial boost over current SD cards, which tend to top out around 80MB or 90MB per second (for cheap commodity cards) and around 250MB per second for the very fastest UHS-II-compatible professional cards.

As Samsung points out, that 800MB/s figure puts these tiny SD Express cards well above the speeds possible with older SATA SSDs, which could make these cards more useful as primary storage devices for PCs or single-board computers that can support the SD Express standard (more on that later).

Samsung is currently sampling a 256GB version of the SD Express card, and "will be available for purchase later this year."

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