Apple Power Mac G5 (Late 2005) Bedienungsanleitung PDF herunterladen (Seite 9)

Technology Overview

Power Mac G5

Multiple Cores and Mac OS X

Mac OS X is ideally suited to leverage the power of quad-core systems, since it was

designed from day one for multiple processors. With symmetric multiprocessing, pre-

emptive multitasking, and multithreading capabilities in Mac OS X, a Power Mac G5

Quad delivers groundbreaking performance.

Symmetric multiprocessing (SMP) in Mac OS X dynamically manages tasks across

multiple processors—and multiple processor cores—without requiring any special

optimization of the application or any special action on the user’s part. With SMP, you

can run a processor-intensive task in the background while you work with another

application. Mac OS X assigns each of these tasks to a di∂ erent processor or core,

allowing the tasks to execute simultaneously, and automatically balances the load

between processors. Preemptive multitasking further optimizes performance by

allowing Mac OS X to prioritize tasks on each processor or core.

Applications can take even greater advantage of multiple cores when they are written

to generate multiple threads (or self-contained tasks), known as multithreading. Many of

today’s applications are multithreaded, achieving up to 69 percent faster performance

on a Power Mac G5 Quad right out of the box.

As a user, you don’t need to worry about symmetric multiprocessing or application

threading—you’ll just enjoy the enhanced performance.

The Power Mac G5 comes with Mac OS X

v10.4 Tiger, Apple’s UNIX-based operating

system, including powerful new features such

as Spotlight, Dashboard, and Automator.

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Apple Power Mac G5 (Late 2005) Bedienungsanleitung Seite 9