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Apple's Intel transition was the process of changing the central processing unit (CPU) of Macintosh computers from PowerPC processors to Intel x86 processors. The transition became public knowledge at the 2005 Worldwide Developers Conference (WWDC), when Apple's then-CEO Steve Jobs made the announcement that the company would make a transition from the use of PowerPC microprocessors supplied by Freescale (formerly Motorola) and IBM in its Macintosh computers, to processors designed and manufactured by Intel, a chief supplier for most of Apple's competitors.〔Apple press release, June 6, 2005:(''Apple to Use Intel Microprocessors Beginning in 2006'' )〕 The transition marked the Macintosh platform's second migration to a new CPU architecture. The first was the switch from the Motorola 68000 ("68k") series architecture (used since the original Macintosh 128K) to the PowerPC architecture. Apple is the only personal computer company to have successfully completed such a transition – competitors Commodore and Atari never regained their market positions after their switch from 6502 to 68k in the mid-1980s〔 〕〔(''The Past and Possible Future of Apple's Intel Transition'' )〕 and stopped manufacturing computers in the early 1990s, around the time Apple was switching to PowerPC. Apple's initial press release indicated the transition would begin by June 2006, and finish by the end of 2007, but it actually proceeded much more quickly. The first generation Intel-based Macintoshes were released in January 2006, and Steve Jobs announced the last models to switch in August 2006, with the Mac Pro available immediately and with the Intel Xserve available by October 2006.〔("WWDC Live Keynote Update" )〕 The Xserve servers were available in December 2006. Apple released Mac OS X v10.6 "Snow Leopard" on August 28, 2009 as Intel-only, removing support for the PowerPC architecture. ==Timeline== *June 6, 2005: Apple announces its plans to switch to Intel processors at the Worldwide Developer Conference and released a Developer Transition Kit, a PC with a Trusted Platform Module in a modified Power Mac G5 case, to all Select and Premier members of the Apple Developer Connection at a price of $999.〔https://www.apple.com/pr/library/2005/jun/06intel.html〕 * January 10, 2006: Jobs announces the first two computers in this series, the 15" MacBook Pro and iMac Core Duo line, both using an Intel Core Duo chip and offers to trade in the Developer Transition Kits for iMacs. * February 28, 2006: Jobs announces that the Mac mini now also comes with an Intel Core chip, in either the Solo or Duo varieties. * April 5, 2006: Apple announced the release of Boot Camp, which allowed users of Intel-based Macs to run Windows XP,〔BBC News article, April 5, 2006: (''Apple makes Macs run Windows XP'' )〕 (and later versions of Boot Camp allow later versions of Windows). * April 24, 2006: Apple announces the 17" MacBook Pro, replacing the 17" PowerBook. * April 27, 2006: Intel announces that processors with the Core microarchitecture would be released months sooner than previously thought. * May 16, 2006: Apple announces the 13" MacBook, replacing both the iBook line and the 12" PowerBook. * June 26, 2006: Intel announces the Xeon 5100 series server/workstation CPU.〔MacWorld article, June 26, 2006: (''Intel rolls out 'Woodcrest' chip'' )〕 * July 5, 2006: Apple announces a special educational configuration of the iMac, replacing the old G4 eMac. * August 7, 2006: "Transition Complete" - Apple announces the Intel-based Mac Pro and Xserve, replacing the Power Mac G5 and Xserve G5, at the Worldwide Developers Conference; both use the Xeon 5100 series ("Woodcrest") processors. * August 28, 2009: Apple ships Mac OS X 10.6 "Snow Leopard," which is the first OS X version that does not support the PowerPC family computers. * March 1, 2011: The beta version of the then-upcoming Mac OS X Lion drops "Rosetta" and will not be able to run PowerPC based software.〔MacWorld article, March 1, 2011: (''No Java, Rosetta, or Front Row in Lion'' )〕 * July 20, 2011: The release of Mac OS X 10.7 Lion formally ends Apple's support of PowerPC-based software. * June 11, 2012: Apple releases iTunes 10.6.3, their last application with support for PowerPC processors.〔iTunes 10.6.3 ()〕 * August 7, 2013: The Power Mac G5 reaches "old" status having been discontinued seven years earlier, ending Apple's service and parts support for PowerPC hardware. PowerPC Macs reached "obsolete" status throughout 2013. 抄文引用元・出典: フリー百科事典『 ウィキペディア（Wikipedia）』 ■ウィキペディアで「Apple's transition to Intel processors」の詳細全文を読む スポンサード リンク
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