Apple iMac Manuel d'utilisateur télécharger pdf (Page 14)

CHAPTER 1

Introduction

Features

The Apple iMac computer is a new consumer-oriented desktop computer. This

chapter summarizes the features of this new computer and points out issues

affecting compatibility.

Features 1

Here is a list of the features of the iMac computer. Each feature is described in

more detail in a later chapter.

■

Processor:

The iMac has a PowerPC G3 microprocessor running at a clock

speed of 233 MHz. For more information, see “G3 Microprocessor” (page 23).

■

Cache:

The iMac has a backside L2 cache consisting of 512 KB of fast static

RAM. The clock speed for the backside cache is half the clock speed of the

microprocessor. For more information, see “Backside Cache” (page 23).

■

Memory:

The iMac has two standard SO-DIMM expansion slots for SDRAM

modules. The computer comes with 32 MB of SDRAM installed. RAM is

expandable up to 128 MB total, using presently available memory devices.

For more information, see “Main RAM Expansion” (page 48).

■

Hard disk storage:

The iMac has a built-in hard disk drive with a capacity of

4 GB. For more information, see “Hard Disk Drive” (page 34).

■

CD-ROM drive:

The iMac has a built-in CD-ROM drive with 24X speed.

■

Display:

The iMac has a built-in 15-inch color monitor (13.8-inch viewable

diagonal). The monitor can display with resolutions of 640 by 480, 800 by

600, or 1024 by 768 pixels. For more information, see “Video Display”

(page 34).

■

Video RAM:

The iMac comes with 2 MB of video SGRAM, which supports

millions of colors on displays up to 800 by 600 pixels and thousands of colors

on a display with 1024 by 768 pixels. The computer has one expansion slot

for a second 2 or 4 MB SGRAM DIMM, which allows the computer to

display millions of colors on a display with 1024 by 768 pixels. For more

information, see “Video RAM Expansion” (page 53).

■

Graphics acceleration:

The video circuits provide built-in 2D and 3D

acceleration using an ATI Rage IIc IC.

■

USB ports:

The computer has two USB ports for keyboard, mouse, and other

USB devices, described in “USB Ports” (page 28).

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Apple iMac Manuel d'utilisateur Page 14

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