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The PowerPC 970 ("G5") was the first 64-bit Mac processor. The PowerPC 970MP was the first dual-core Mac processor and the first to be found in a quad-core configuration. It was also the first Mac processor with partitioning and virtualization capabilities. Apple only used three variants of the G5, and soon moved entirely onto Intel architecture.
Mac OS X 10.6 Snow Leopard was the first version of Mac OS X to be built exclusively for Intel Macs, and the final release with 32-bit Intel Mac support. [37] The name was intended to signal its status as an iteration of Leopard, focusing on technical and performance improvements rather than user-facing features; indeed it was explicitly ...
With the release of Mac OS X Snow Leopard, and before that, since the move to 64-bit architectures in general, some software publishers such as Mozilla [1] have used the term "universal" to refer to a fat binary that includes builds for both i386 (32-bit Intel) and x86_64 systems. The same mechanism that is used to select between the PowerPC or ...
Darwin currently includes support for the 64-bit x86-64 variant of the Intel x86 processors used in Intel-based Macs and the 64-bit ARM processors used in the iPhone 5S and later, the 6th generation iPod Touch, the 5th generation iPad and later, the iPad Air family, the iPad Mini 2 and later, the iPad Pro family, the fourth generation and later ...
In 2005, it switched again to Intel 32-bit and 64-bit x86. In 2011, Mac OS X Lion dropped support for Macs with 32-bit processors; in 2019, macOS Catalina dropped support for 32-bit Intel apps. Supported 64-bit Intel systems can still boot the latest versions of macOS as of December 2024.
Final version of macOS to support 32-bit hardware and software; macOS Catalina: June 3, 2019 October 7, 2019 Version 10.15; First version of macOS with only 64-bit hardware and software support; 32-bit hardware and software support dropped; Macintosh computers (x86 and ARM64) macOS Big Sur: June 22, 2020 November 12, 2020 Version 11; macOS ...
Ports to the Commodore 64, Apple II, and IBM PC were later released. [citation needed] A version for the Atari ST was announced and developed, but not published. [citation needed] Until recently, it was thought that a Mac version left unpublished. The published Mac version was rediscovered in 2021 by a game collector. [1]
K32 can run 64-bit applications in userland. [10] What was new in Mac OS X 10.6 was the ability to run XNU in 64-bit kernel space. K32 was the default kernel for 10.6 Server when used on all machines except Mac Pro and Xserve models from 2008 onwards [11] and can run 64-bit applications.