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Compact (15 mm × 11 mm × 1 mm), DRM, up to 2 GB. [4] (2 GB cards use larger block sizes and may not be compatible with some host devices. See Article) microSD: 2005 2 GB [4] Subcompact (15 mm × 11 mm × 1 mm), DRM, up to 2 GB. [4] (2 GB cards use larger
Most standard size SD cards are 2.1 mm (0.083 inches) [58] thick, with microSD versions being 1.0 mm (0.039 inches) [58] thick, compared to 1.4 mm (0.055 inches) for MMCs. The SD specification defines a card called Thin SD with a thickness of 1.4 mm, [ citation needed ] but they occur only rarely, as the SDA went on to define even smaller form ...
In 2004, the Reduced-Size MultiMediaCard (RS-MMC) was introduced as a smaller form factor of the MMC, with about half the size: 24 mm × 18 mm × 1.4 mm. The RS-MMC uses a simple mechanical adapter to elongate the card so it can be used in any MMC (or SD) slot. RS-MMCs are currently available in sizes up to and including 2 GB.
Standard SD UFS Card CFast XQD CFexpress; Version 3.0 4.0 6.0 7.0 [28]: 8.0 1.0 2.0 1.0 2.0 1.0 2.0 1.0 2.0 4.0 Launched 2010 Q2 2011 Q1 2017 Q1 2018 Q2 2020 Q1
As of September 2009, 2 GB (2000 MB) xD cards' retail prices are approximately three times those of same-capacity SD cards. Many newer Olympus and Fujifilm digital cameras accept the more popular SD or CF cards, in addition to or instead of the xD format. Small maximum capacity relative to other memory card formats.
A SmartMedia card consists of a single NAND flash chip embedded in a thin plastic card, [3] although some higher-capacity cards contain multiple linked chips. It was one of the smallest and thinnest of the early memory cards, only 0.76 mm thick, and managed to maintain a favorable cost ratio as compared to the others.