XQD card

From HandWiki
Short description: Memory card format
XQD card
XQD logo.svg
DS7 4260 PK.jpg
Media typeMemory card
CapacityOver 2 TB
Developed byCompactFlash Association
Dimensions38.5 mm × 29.8 mm × 3.8 mm
UsageDigital cameras
An XQD card reader from Sony
An XQD card reader from Sony

The XQD card is a memory card format primarily developed for flash memory cards. It uses PCI Express as a data transfer interface.

The format is targeted at high-definition camcorders and high-resolution digital cameras. It offers target read and write speeds from 1 Gbit/s to about 5 Gbit/s [1][note 1] and storage capabilities beyond 2 TB.[2][3][failed verification]

The cards are not backward compatible with CompactFlash or CFast cards, and despite the name similarity, has no connection with the xD-Picture Card. XQD and CFast were both designed as a replacement of the 1994 CompactFlash standard.

The format was first announced in November 2010 by SanDisk, Sony and Nikon, and was immediately picked up by the CompactFlash Association for development.[4] The final specification was announced in December 2011.[1][5]

XQD version 2.0 was announced in June 2012, featuring support for PCI Express 3.0 with transfer rates up to 8 Gbit/s (1 GB/s).[6]

On 7 September 2016 the CFA announced the successor of XQD, CFexpress.[7] This new standard uses the same form-factor and interface but uses the NVMe protocol for higher speeds, lower latencies and lower power consumption.

Support

In January 2012, the first XQD card was announced by Sony, declaring a 1 Gbit/s read and write speed.[8][9] In July 2012, Lexar (owned at the time by Micron) announced plans to support the XQD format.[10]

As of 2012, SanDisk and Kingston had not announced plans to produce XQD cards.[11][12]

In addition to Sony, as of August 2018, Nikon and Delkin are also manufacturing XQD cards.[citation needed]

In late 2018, Lexar – by then under new ownership – [13][14] announced that it would discontinue support for the XQD format in favour of CFexpress, citing problems with control, licensing and product availability.[15]

Hosts

Sony has said their broadcast camcorders (XDCAM and XDCAM EX) will support the XQD cards. For their broadcast products the XQD card will be classified as a secondary media as XQD is based around consumer technology. Nonetheless, the cards will support acquisition in the broadcast quality MPEG HD422 50 Mbit/s format. On 4 September 2013, Sony released the PXW-Z100, a 4K prosumer camera that records onto XQD cards.[16]

Nikon supports XQD cards in its newer high-end DSLR and mirrorless cameras: Nikon D4, Nikon D4s, Nikon D5, Nikon D6, Nikon D850, Nikon D500 and Nikon Z6 & Nikon Z7.[17][18][19][20][3]

Phase One XF IQ4 camera system (three bodies) supports XQD cards.[21]

See also

Notes

  1. ↑ Disk-based memory (hard drives), solid state disk devices such as USB drives, DVD-based storage, bit rates, bus speeds, and network speeds, are specified using decimal meanings for K (10001), M (10002), G (10003), ...

References

  1. ↑ 1.0 1.1 "CompactFlash Association readies next-gen XQD format, promises write speeds of 125 MB/s and up". Engadget. https://www.engadget.com/2011/12/08/compactflash-association-readies-next-gen-xqd-format-promises-w/. 
  2. ↑ "CompactFlash Association Announces the Recently Adopted XQD(TM) Specification as a New Memory Card Format". CompactFlash Association. 7 December 2011. http://compactflash.org/2011/compactflash-association-announces-the-recently-adopted-xqdtm-specification-as-a-new-memory-card-format/. "Actual Write Speeds Target 125 MB/sec and Higher" 
  3. ↑ 3.0 3.1 "What is XQD and Why Should I use it | Nikon" (in en). https://www.nikonusa.com/en/learn-and-explore/a/products-and-innovation/what-is-xqd-and-why-should-i-use-it.html. 
  4. ↑ "Sandisk, Sony, and Nikon propose 500 Mbps memory card with more than 2 TB capacity". Engadget. https://www.engadget.com/2010/11/30/sandisk-sony-and-nikon-propose-500mb-per-second-memory-card-wi/. 
  5. ↑ "CompactFlash Association Announces XQD Card Format". Compactflash.org. 2011-12-07. http://compactflash.org/2011/compactflash-association-announces-the-recently-adopted-xqdtm-specification-as-a-new-memory-card-format/. 
  6. ↑ "The CompactFlash Association Invites Participation on XQDTM 2.0 — The CompactFlash Association". Compactflash.org. 2012-09-15. http://compactflash.org/2012/the-compactflash-association-invites-participation-on-xqdtm-2-0/. 
  7. ↑ "CFA 5.1 Press Release". 2016-09-07. Archived from the original on 2016-12-21. https://web.archive.org/web/20161221005313/http://www.compactflash.org/assets/docs/cfapress/cfexpress_family_pr_160907.pdf. "CFA has developed [card standards including] CompactFlash®, CFast®, and XQD® formats. [..] CFexpress is the next evolution in an open standard format for a broader set of applications" 
  8. ↑ "Sony Announces World's First XQD Memory Cards". 6 January 2012. https://techcrunch.com/2012/01/06/sony-xqd-memory-cards/. 
  9. ↑ "Sony - Sony unveils new high-speed XQD™*1 memory cards : : News : Sony Europe Press Centre". http://presscentre.sony.co.uk/content/detail.aspx?NewsAreaId%3D2%26ReleaseID%3D7201. 
  10. ↑ "Lexar Announces Support for XQD Memory Card Specification". http://www.lexar.com/about/newsroom/press-releases/lexar-announces-support-xqd-memory-card-specification. 
  11. ↑ "Sandisk, Lexar, Kingston not making new XQD cards". 17 January 2012. http://www.techradar.com/news/photography-video-capture/cameras/sandisk-lexar-kingston-not-making-new-xqd-cards-1055347. 
  12. ↑ Shankland, Stephen (2012-01-13). "SanDisk on new XQD memory card format: 'Meh'". CNET. http://ces.cnet.com/8301-33363_1-57358446/sandisk-on-new-xqd-memory-card-format-meh/. 
  13. ↑ "Longsys Acquires Lexar Brand, a Leading Brand for High-Performance Removable Storage Solutions". 31 August 2017. http://www.longsys.com/longsys-acquires-lexar-brand-a-leading-brand-for-high-performance-removable-storage-solutions/. 
  14. ↑ "R.I.P. Lexar Memory Cards". 2017-06-27. https://petapixel.com/2017/06/27/r-p-lexar-memory-cards/. 
  15. ↑ "Lexar Quits XQD Cards, Accuses Sony of Preventing Progress". 25 October 2018. https://petapixel.com/2018/10/25/lexar-quits-xqd-cards-accuses-sony-of-preventing-progress/. "Lexar has abandoned the XQD memory card format and is now focusing its attention on pushing for CFexpress as the future standard. [..saying that..] “the product availability of XQD has been held up by multiple parties including Sony (who owns the IP) which is preventing us from moving forward”" 
  16. ↑ "Sony XDCAM Micro site". Sony. 2013-09-04. http://pro.sony.com/bbsc/ssr/micro-xdcam/resource.latest.bbsccms-assets-micro-xdcam-latest-pxwz100.shtml?PID=I:prohomepage:promotion:pxwz100_landing_page?. 
  17. ↑ "Nikon announces first camera to use new XQD cards". arstechnica.com. 2012. https://arstechnica.com/gadgets/news/2012/01/nikon-d4-first-camera-to-use-new-xqd-cards-sony-to-make-them.ars. 
  18. ↑ "When There Is No Second Chance: The New Nikon FX-Format D4 Multi-Media Digital SLR is The Definitive Unification Of Speed And Precision" (Press release). Nikon Inc. 2012. Archived from the original on January 8, 2012. Retrieved 2012-01-07.
  19. ↑ "Conquer the Dark: The New Nikon D5 DSLR Shatters Expectations for Thrilling New Levels of Low-Light Performance, Image Quality and Speed" (Press release). Nikon Inc. 2016. Archived from the original on January 7, 2016. Retrieved 2016-01-05.
  20. ↑ "Pro Pedigree, DX Agility: The New Nikon D500 Establishes a New Era of DX-Format Performance" (Press release). Nikon Inc. 2016. Archived from the original on January 7, 2016. Retrieved 2016-01-05.
  21. ↑ "XF IQ4 150MP Camera System". 2018-08-28. https://www.phaseone.com/en/Camera-Systems/XF-Camera-System/IQ4/XF-IQ4-150MP-Camera-System.aspx. 

External links



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