This article provides the technical specifications for the Power Mac G4 (Gigabit Ethernet) computer. You may find additional information in the Apple Spec database online at http://www.info.apple.com/applespec/applespec.taf / .

Processor

400 MHz, dual 450 MHz, or dual 500 MHz PowerPC G4 processor(s)

Velocity Engine vector processing unit with 162 integrated Single Instruction Multiple Data (SIMD) instructions

Full 128-bit internal memory data paths

Powerful floating-point unit supporting single-cycle, double-precision calculations

Data stream prefetching operations supporting four simultaneous 32-bit data streams

1 MB backside level 2 cache per processor

100 MHz system bus supporting up to 800 MBps data throughput

Memory

64 MB, 128 MB or 256 MB of PC100 SDRAM (3.3 V, unbuffered, 64-bit-wide, 168-pin, running at 100 MHz)

Four DIMM slots support up to 1.5 GB of PC100 SDRAM (999 MB maximum per application in Mac OS 9) using the following DIMMs:

- 64 MB or 128 MB DIMMs (64-bit-wide, 64-Mbit technology)

- 128 MB or 256 MB DIMMs (64-bit-wide, 128-Mbit technology)

- 512 MB DIMMs (64-bit-wide, 256-Mbit technology)

Communications

10/100/1000BASE-T Ethernet connector (RJ-45)

Optional 11 Mbps AirPort Card; IEEE 802.11 DSSS compliant (See Note 1.)

Optional AirPort Base Station containing 56 Kbps modem and 10 Mbit BASE-T Ethernet port. (See Note 1.)

Built-in 56 Kbps V.90 modem card. (See Note 2.)

Storage (See Note 3.)

One of the following hard disk drives:

- 20 GB 5400-rpm Ultra ATA/66

- 30 GB 7200-rpm Ultra ATA/66

- 40 GB 7200-rpm Ultra ATA/66

One of the following optical drives:

- DVD-ROM drive for DVD movies and CDs

- DVD-RAM drive for playing DVD movies and CDs, and writing to DVD-RAM discs (up to 9.4 GB per disc) Three 90 mm (3.5-inch) hard disk drive expansion bays

- One ATA drive preinstalled in standard configurations

- Support for up to two internal ATA drives

- Support for up to three internal SCSI drives

Peripheral connections

Two 400 Mbps FireWire ports; includes one 4-pin-to-6-pin FireWire cable for connecting DV camcorders

Two USB ports (12 Mbps each)

Expansion

Three full-length 64-bit, 33 MHz PCI slots

One AGP 2X slot with graphics card installed

Graphics support

ATI RAGE 128 graphics card with 16 MB of SDRAM graphics memory installed in a dedicated AGP 2x graphics slot

Support for up to 1920 by 1200 pixel resolution at 32 bits per pixel (millions of colors)

Apple Display Connector (ADC); carries analog and digital video, USB, and power

15-pin mini D-Sub VGA connector

Audio

One input and one output analog minijack supporting 16-bit stereo audio; 44.1 kHz sampling rate

Built-in speaker

Support for external third-party FireWire and USB digital audio peripherals such as microphones, speakers, and MIDI devices

Keyboard and mouse

Apple Pro Keyboard with full-size function and navigation keys, audio controls, and media-eject key

Apple Pro Mouse with optical sensor for precision cursor control

Electrical requirements and agency approvals

Line voltage: 115 V AC (90 V to 132 V AC) or 230 V AC (180 V to 264 V AC)

Frequency: 47 Hz to 63 Hz, single phase

Maximum continuous power: 220 W

EPA ENERGY STAR compliant

Environmental requirements

Operating temperature: 10° C to 35° C

Storage temperature: -40° C to 47° C

Relative humidity: 5 percent to 95 percent noncondensing

Altitude: 0 m to 3000 m

Size and weight

Height: 432 mm

Width: 226 mm

Depth: 467 mm

Mass: 13.6 kg (See Note 4.)

Notes

1. Wireless Internet access requires AirPort Base Station and Internet access (fees may apply). Some ISPs are not currently compatible with AirPort, including America Online. Range may vary with site conditions.

2. Actual modem speeds lower; speed depends on connection rate and other factors.

3. For hard drive capacity measurements, 1 GB equals 1 billion bytes; actual formatted capacity less.

4. Mass varies depending on configuration.