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New Features

The features that have changed are listed here along with references to the sections that describe them. For a quick comparison of new and old features, see Table 1-1.

Processor speed: The clock speed of the microprocessor is 500 MHz. See G3 Microprocessor.
Memory: The CD-ROM model has 64 MB of SDRAM installed on the main logic board and one standard SO-DIMM slot for memory expansion up to 576 MB total. The other models have 128 MB of SDRAM installed on the main logic board and one standard SO-DIMM slot for memory expansion up to 640 MB total. See System RAM.
Display: The computer has a 12.1-inch TFT display with XGA (1024 by 768) resolution. See Flat Panel Display.
Graphics IC: The display controller is an ATI RAGE Mobility M128. See Graphics IC.
Composite video output: The computer has an A/V port with a composite video output signal. See Composite Video Output.
RGB video output: The computer has an output port for connecting an RGB video monitor. See RGB Video Output.
Hard disk storage: The computer has a hard disk drive with a storage capacity of 10 GB. See Hard Disk Drive.
USB ports: The computer has two USB ports. See USB Ports.
FireWire port: The computer has an IEEE-1394 FireWire high-speed serial port. See FireWire Port.
CD-ROM drive: One configuration has a 24x-speed CD-ROM drive. See CD-ROM Drive.
DVD-ROM drive: One configuration has an 8x-speed DVD-ROM drive. See DVD-ROM Drive.
Combination DVD-ROM/CD-RW drive: One configuration has a combination DVD-ROM/CD-RW drive. For more information, see DVD-ROM/CD-RW Drive.
CD-RW drive: A CD-RW drive is available as an option. For more information, see CD-RW Drive.
Sound: The iBook has a built-in microphone and stereo speakers along with stereo output signals on the A/V jack. See Sound System.
Battery: The computer has a 6-cell battery with 42 WHr capacity.

Weight: With the battery installed, the computer weighs approximately 2.2 kg (4.9 pounds); the exact weight depends on the configuration.

Size: The iBook computer is 28.50 cm (11.2 inches) wide and 23.03 cm (9.06 inches) deep. Its thickness is 3.39 cm (1.33 inches).

Table 1-1 lists the features that have changed, giving a side-by-side comparison of the new models with the previous models.

Table 1-1 Comparison of features

Feature	Previous models	Current models
CPU speed	366 or 466 MHz	500 MHz
L2 cache type and speed	256 KB internal, 366 or 466 MHz	256 KB internal, 500 MHz
Memory	64 MB (320 MB max.)	64 or 128 MB (640 MB max.)
Graphics IC	ATI RAGE Mobility 128	ATI RAGE Mobility M128
Display size	12.1-inch SVGA	12.1-inch XGA
Hard disk drive	10 GB (20 GB available)	10 GB (20 GB available)
Optical drive	24x CD-ROM or 6x DVD-ROM	24x CD-ROM, 8x DVD-ROM, or DVD-ROM/CD-RW; 4x/8x/24x CD-RW also available
I/O ports	1 USB port; 1 FireWire port	2 USB ports; 1 FireWire port
Sound features	Built-in speaker, stereo outputs	Built-in mic; stereo speakers and outputs
Battery	48 WHr	42 WHr
Weight	3.0 kg to 3.2 kg (6.6 to 6.8 pounds)	2.2 kg (4.9 pounds)
Size	Width 34.4 cm (13.5 inches), depth 29.4 cm (11.6 inches), thickness 3.1-5.2 cm (1.24-2.06 inches)	Width 28.50 cm (11.2 inches), depth 23.03 cm (9.06 inches), thickness 3.42 cm (1.35 inches)