The PowerMac G4
(AGP Graphics)

Codename: Sawtooth
CPU: MPC 7400
CPU speed: 350/400/450/500 Mhz
FPU: integrated
motherboard RAM: 0 MB
maximum RAM: 1.5 GB
number of sockets: 4 -- PC100 SDRAM DIMM
minimum speed: 100 Mhz/10 ns
ATI RAGE 128 Pro 2D/3D AGP graphics card
ROM: 1 MB, (3 MB loaded into RAM)
L1 cache: 32 k data, 32 k instruction
L2 cache: 1 MB backside (1:2)
data path: 64 bit
bus speed: 100 Mhz (up to 800Mhz memory throughput)
slots: 3 64-bit 66Mhz PCI, 1 133Mhz (2x) AGP (used by graphics card)
SCSI: optional PCI card
Serial Ports: none
ADB: none
USB: 2 (12 Mbs each)
FireWire: 3 400 Mbps (one internal) Floppy: none
Zip: 1 100MB (optional)
AirPort: optional card
HD: min. 20 GB Ultra ATA-66 (up to 3 36GB available as BTO option)
Display: supports all resolutions
Sound Output: stereo 16 bit
Sound Input: stereo 16 bit
Ethernet: 10/100B-T
Gestalt ID: 406
power: 200 Watts
Weight: 28.7 lbs.
Dimensions: 17" H x 8.9" W x 18.4"
Min System Software: 8.6
Max System Software: 9.0.2
introduced: September 1999

Announced in September 1999, alongside the PowerMac G4 (PCI Graphics), the PowerMac G4 (AGP Graphics) was a major revision of the PowerMac line. Based on the Unified Motherboard Architecture, The G4 AGP was built around the MPC 7400 chip, which was dramatically faster than its predecessor, the PPC 750. (for a more detailed description of the 7400, click here.)

The G4 AGP introduced a number of performance improvements, including AGP-based graphics, AirPort compatibility, a faster memory bus, DVD-ROM or RAM standard, an internal FireWire port, 2 separate USB buses for a combined 24 Mbs, a 2X (133 Mhz) AGP slot, and up to 1.5 GB of RAM. The G4 AGP also introduced the new professional color, "graphite."

The G4 AGP started at $2499 for the 450 Mhz configuration with a 20GB hard drive and 128 MB of RAM, and $3499 for the 500 Mhz configuration with a 27 GB hard drive and 256 MB or RAM (both included internal Zip drives).

There were extreme supply issues with the G4 initially, due largely to Motorola's inability to deliver the 7400 chips in adequate supply. This was further compounded by an "errata" in the initial revision of the 7400 that effectively lowered the ceiling of the chip to 450Mhz. As a result, all models of the G4 were "speed dumped" in October. The $2499 450 Mhz model was lowered in speed to 400 Mhz, and the $3499 500 Mhz model was lowered to 450Mhz. The price, and all other specs were the same.

Not a single first-run G4/500 shipped, and very few $2499 G4/450s ever made it to the channel. Orders placed before the speed reduction were honored, with the exception of the 500Mhz orders, which were filled with 450Mhz models with more Memory.

A 350 Mhz configuration was subsiquently added to replace the similar G4 (PCI Graphics) configuration a month later, and the whole line was speed-bumped back up to 400/450/500 in February 2000.

Pictures: Apple Corporate Site

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