Editing Intel QuickPath Interconnect (section)

==Background==
Although sometimes called a "bus", QPI is a scalable interconnect fabric with dynamic routing capabilities. It was designed to compete with [[HyperTransport]] that had been used by [[Advanced Micro Devices]] (AMD) since around 2003.<ref>{{cite web |title= Everything You Need to Know About The QuickPath Interconnect (QPI) |date= August 25, 2008 |author= Gabriel Torres |work= Hardware Secrets |url= http://www.hardwaresecrets.com/everything-you-need-to-know-about-the-quickpath-interconnect-qpi/ |access-date= January 23, 2017 }}</ref><ref>{{Cite news |title= Intel Intel gets knickers in a twist over Tanglewood |work= The Inquirer |author= Charlie Demerjian |date=December 13, 2005 |url= http://www.theinquirer.net/inquirer/news/1010791/intel-knickers-twist-tanglewood |archive-url= https://web.archive.org/web/20100903014920/http://www.theinquirer.net/inquirer/news/1010791/intel-knickers-twist-tanglewood |url-status= unfit |archive-date= September 3, 2010 |access-date= September 13, 2013 }}</ref> Intel developed QPI at its Massachusetts Microprocessor Design Center (MMDC) by members of what had been the [[DEC Alpha|Alpha]] Development Group, which Intel had acquired from Compaq and HP and in turn originally came from [[Digital Equipment Corporation]] (DEC).<ref name="realworld"/>
Its development had been reported as early as 2004.<ref>{{Cite news |title= Intel's Whitefield takes four core IA-32 shape |work= The Inquirer |author=  Eva Glass |date=December 12, 2004 |url= http://www.theinquirer.net/inquirer/news/1028779/intels--whitefield-takes-four-core-ia-32--shape |archive-url= https://web.archive.org/web/20090524173105/http://www.theinquirer.net/inquirer/news/1028779/intels--whitefield-takes-four-core-ia-32--shape |url-status= unfit |archive-date= May 24, 2009 |access-date= September 13, 2013 }}</ref>

Intel first delivered it for desktop processors in November 2008 on the [[Bloomfield (microprocessor)|Intel Core i7-9xx]] and [[Intel X58|X58]] [[chipset]].
It was released in Xeon processors code-named [[Nehalem (microarchitecture)|Nehalem]] in March 2009 and Itanium processors in February 2010 (code named Tukwila).<ref>{{cite web |title= Intel's Tukwila Confirmed to be Quad Core |work= Real World Tech |author= David Kanter |date= May 5, 2006 |url= http://realworldtech.com/page.cfm?NewsID=361 |url-status=dead |archive-url=https://web.archive.org/web/20120510074305/http://realworldtech.com/page.cfm?NewsID=361 |archive-date=May 10, 2012 |access-date= September 13, 2013 }}</ref>

It was supplanted by the [[Intel Ultra Path Interconnect]] starting in 2017 on the [[Xeon]] [[Skylake-SP]] platforms.<ref>{{cite web |url=https://www.intel.com/content/www/us/en/developer/articles/technical/xeon-processor-scalable-family-technical-overview.html |title = Intel® Xeon® Processor Scalable Family Technical Overview}}</ref>