The PowerMac G4
CPU: MPC 7400
CPU speed: 350/400 Mhz
motherboard RAM: 0 MB
maximum RAM: 1 GB
number of sockets: 4 -- PC100 SDRAM DIMM
minimum speed: 100 Mhz/10 ns
VRAM: 16 MB
ATI RAGE 128 2D/3D 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
slots: 3 64-bit 33Mhz PCI, 1 32-bit 66Mhz PCI (used by graphics card)
SCSI: optional PCI card
Serial Ports: none
FireWire: 2 400 Mbps
HD: 10 GB Ultra ATA-33 (up to 3 36GB available as BTO option)
CD-ROM: 32x, DVD/DVD-RAM available
Display: supports all resolutions
Sound Output: stereo 16 bit
Sound Input: stereo 16 bit
Ethernet: 10/100B-T (1000B-T avaiable as BTO option)
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
introduced: September 1999
terminated: December 1999
The PowerMac G4 (PCI Graphics) was announced in September 1999, along with the PowerMac G4 (AGP Graphics). Based on the same motherboard as the "Blue and White" G3, the G4 PCI added a Motorola MPC 7400 processor to an already succesful machine. Apple billed the 7400 as a "Super Computer on a chip", due to the fact that it was capable of excecuting more than a billion instructions per second (a gigaflop). Much of the 7400's speed increase was due to a new set of instructions, which were executed by a new unit on the chip. Motorola refers to this new unit as the "AltiVec" unit, while Apple publicly refers to it as the "Velocity Engine." The Velocity Engine vastly increased the speed of many common processor-intensive tasks.
Originally, the MPC 7400 chip had been planned to debut in the G4 AGP model, but Apple was not able to get the new machine ready in time. The G4 PCI had been in the works in case of such an event, and allowed Apple to ship 7400-equipt machines while they worked out the final bugs of the G4 AGP. The G4 PCI introduced the new case design, similar to that of the B&W G3, but tinted in the new professional color, "graphite." The G4 PCI was priced at a modest $1599, and shipped standard with 64 MB of RAM, a 10GB hard drive, a 32x CD-ROM, 56k modem. Zip and DVD-ROM/RAM drives were available as BTO options.
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 PowerMac G4 PCI was decreased in speed to 350 Mhz, for the same $1599 price tag. Existing orders for the G4 PCI/400 were largely honored.
The G4 (PCI Graphics) was terminated at the end of 1999 in favour of a similar configuration based on the G4 (AGP) motherboard.
Pictures: Apple Corporate Site