New SD Express Standard Promises Up to 985MB/s Speeds




/ 2 years ago

New SD Express Standard Promises Up to 985MB/s Speeds

Revolutionizing the SD Card Standard

The SD Association, a group responsible for setting SD memory card standards, is announcing the SD Express SDUC standard. This not only brings significantly faster transfer rates to the popular memory card standard, but higher capacity as well. Specifically, users can expect these SDUC cards to reach maximum data transfer rates of up to 985MB/s. In comparison, Sony’s SF-G series UHS-II cards offer up to 300MB/s read and 299 MB/s write speeds. So this is more than three times as fast.

This is also much faster than the UHS-III interface announced last year which reach up to 624MB/s transfer rates.

What About Capacity Sizes?

New SD Express Standard Promises Up to 985MB/s Speeds

Furthermore, the storage capacity for SD Express is set at 128TB. This is much larger than the SDXC standard range of 32GB to 2TB by a significant margin. In comparison, 20GB desktop drives are not even expected to appear in the market yet until 2019. Even the current largest capacity solid-state drive from Nimbus called the ExaDrive is only 100TB.

The SD 7.0 specification adds PCI-Express and NVMe interface support, which enables the high transfer rates. This larger capacity and significantly faster speed easily handles 4K and 8K video recording and playback, which is an essential requirement moving foward.

“With SD Express we’re offering an entirely new level of memory card with faster protocols turning cards into a removable SSD,” said Hiroyuki Sakamoto, SD Association president. “SD 7.0 delivers revolutionary innovations to anticipate the needs of forthcoming devices and content rich and speed hungry applications.”


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