Lexar is manufacturing some XQD Cards, What exactly is this XQD cards, for which all devices it supports? What for we use these cards?
What is XQD Cards ?
XQD card is a memory card format primarily developed for flash memory cards. It uses PCI express as a data transfer interface.
The format was first announced in November 2010 by Scan disk, Sony and Nikon, and was immediately picked up by the Compact flash Association for development. The final specification was announced in December 2011.
The new format is targeted at high-definition camcorders and high-resolution digital photo cameras. It would offer target read and write speeds from 1 Gbit/s (125 Mbyte/s) to about 500 Mbytes/s and storage capabilities beyond 2 TB.
Sony has also said their Broadcast Camcorders (XDCAM and XDCAM EX) will also support the XQD cards. For their broadcast products the XQD card will be classified as a secondary media as XQD is based around a DSLR consumer technology however the cards will support acquisition in the broadcast quality HD422 50Mbit/s.
The cards are not backward compatible with Compact flash or Cfast cards. Compared to CFast, both are designed as the replacement of the 18-year-old CF standard. XQD has major backers such as Sony and Nikon.
In January 2012, the first XQD card was announced by Sony declaring a 1Gbit/s read and write speed.
In July 2012, Lexar announced plans to support the XQD format. Currently, Scan disk and Kingston have not announced plans to produce XQD cards
The Nikon d4Â is the first camera to support the XQD format.
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What is XQD Cards ?
XQD card is actually a memory card chiefly designed for flash memory cards and applies PCI Express as its data transfer interface. The new format is aimed at HD camcorders and high-resolution digital photo cameras. It offers storage capacities above 2 TB with read and write speeds from around 1 Gbit/s or 125 Mbyte/s up to 4 Gbit/s or 500 Mbyte/s.
Unfortunately, XQD card is not backward compatible with memory card types such as CFast and CompactFlash. CFast and XQD cards were both designed as replacements or substitutes for the CF standard which is already 19 years old as of this year. The XQD memory card format was initially announced in November 2010 by Nikon, Sony, and SanDisk.
It was right away picked up for development by the CompactFlash Association. The version 2.0 of XQD memory card was announced in June 2012. It features the application of PCI Express 3.0 with transfer speeds of up to 8 Gbit/s or 1000 Mbyte/s.
