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Will 10.5 (Leopard) also run on a Mac with an Intel chipset and CPU?
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Will 10.5 (Leopard) also run on a Mac with an Intel chipset and CPU?

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What is the last Macintosh OS that supports the CPU's before Intel CPU's started being used in Mac computers?<br />
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I'm looking through Craigslist ads and often only the Mac operating system is listed and the CPU or chipset information is not listed.<br />
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I need to know at exactly which point the Macintosh operating system started supporting only the Intel CPU's.
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What is the last Macintosh OS that supports the CPU's before Intel CPU's started being used in Mac computers?

I'm looking through Craigslist ads and often only the Mac operating system is listed and the CPU or chipset information is not listed.

I need to know at exactly which point the Macintosh operating system started supporting only the Intel CPU's.

Last Mac OS that supports the CPU's before Intel CPU's started being used?

All of Apple's hardware is produced solely by Apple Inc., who determines internal systems, designs, and prices. Apple buys certain components wholesale from third-party manufacturers. The current Mac product family uses Intel x86-64 processors. All Mac models ship with at least 1 GB RAM as standard. Current Mac computers use ATI Radeon or nVidia GeForce graphics cards and include a dual-function DVD and CD burner, called the SuperDrive. Current Apple hardware includes the iPad, iPhone, iMac, Mac Pro, Macbook, iPod and Apple TV. Discontinued hardware includes the Apple I, Apple II, and the Apple III, the Lisa, the Newton, the Quadra, Performa, Centris, Macintosh II and LC series, the Power Macintosh, iBooks and the MacBook.

Apple Hardware

Apple's early computers ran on a variety of operating systems, including a Pascal version and one based on CP/M, before releasing its ProDOS with the advent of its 16-bit computer. With the release of the Lisa, which had its own OS, Apple and computing entered the graphical age; it was followed by the Macintosh, which offered a series of "System" operating systems. Other Mac operating systems included PowerPC until Apple acquired NeXT and folded it into the Mac OS. Current operating systems for Apple devices are Mac OS-X and iOS.

Apple OS

Mac OS X is the desktop operating system from Apple Inc., found on Macintosh computers. OS X consists of a Mach/BSD-based kernel, operating system interfaces primarily based on FreeBSD and additional frameworks (written in C, C++ and Objective-C providing user interface and application-level services.