SD gets faster

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Hold on to your hat. The SD Association has come up with a new, dual-row pin memory card design achieving bus interface speeds of up to 300 megabytes per second for SDXC and SDHC devices and memory cards. The SD 4.0 standard will mean devices using it will be fully backwards compatible, allowing full use of any SD, SDHC and SDXC memory cards.

New high speed interface signals will be assigned on the second row of pins of SDXC and SDHC memory cards offering the new speed. This option will be available in both full-size and micro cards and does not change the physical size or shape of the cards. The SD 4.0 specification is expected in early 2011.

In the meantime, Toshiba has launched 8GB (gigabyte), 16GB and 32GB SDHC UHS-I cards compliant with the SD Memory Card Standard Ver. 3.0 (SD 3.0). These new SD cards offer the world’s fastest SDHC data read and write speeds, says the company. Toshiba also has unveiled the world’s first 4GB, 8GB and 16GB microSDHC UHS-I cards compliant with SD 3.0.

Mass production of the new SDHC UHS-I cards and sample shipments of the new microSDHC UHS-I cards will start this November, says Toshiba.

With a maximum read speed of 95MB per second, and a write speed of 80MB per second, the products introduce a new level of ultra-fast read and write speeds to NAND flash based memory cards.

Toshiba’s new microSDHC UHS-I cards offer the world’s fastest read and write speeds in their class: a maximum read speed of 40MB per second and a write speed of 20MB per second.

The specifications of the new cards combine increased data capacity with the fast data transfer rates essential for applications such as high speed continuous shooting of high resolution digital still cameras, video, and high speed transfers of HD content.

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