Power Mac G4 (Digital Audio)
Codename: "Tangent, Clockwork"
Introduced: January 2001
Discontinued: July 2001
Processor: PowerPC 7410 v1.3 or 7450 v2.0 (G4)
Processor Speed: 466, 533, dual 533, 667, 733 MHz
Cache: 64k L1, 256k (1:1) or 1 MB (1:2) L2, 1 MB L3 (733MHz)
Data Path: 128 bit (CPU) 64 bit (Bus)
System Bus: 133 MHz
Hard Drive Size: 30GB 5400-rpm, 40GB 7200-rpm, or 60GB 7200-rpm
Media: 8x4x32x CD-RW or 2x/6x/8x/4x/24x DVD-R/CD-RW Drive (SuperDrive)
Weight and Dimensions: 30 lbs, 17" H x 8.9 W" x 18.4 D"
Original Mac OS: Mac OS 9.1 (Mac OS 9.1/10.0.3 on later shipments)
Maximum Mac OS: Latest release of Mac OS X
Machine ID: PowerMac3,4
Motherboard RAM: 0 MB
Maximum RAM: 1.5 GB
Number of Sockets: 3 - PC133 3.3v, unbuffered, 8-byte, non-parity 168-pin SDRAM
Minimum RAM Speed: 125 MHz (8 ns)
Graphics Card: ATI Rage 128 Pro, Radeon, NVIDIA GeForce2 MX, or GeForce3
Video Memory: 16 MB (128 Pro), 32 MB (GeForce2/Radeon), or 64 MB (GeForce3)
Built-in Display: None
Display Connection: SVGA or ADC
Slots: 4 - 64-bit 33 MHz PCI, 1 - 4x AGP
Hard Drive Bus: Ultra ATA/66
Expansion Bays: 4 - internal 3.5" ATA drive bays, 1 - Zip 250 bay
Modem: Optional 56k
Airport: Optional AirPort card
Bluetooth: None
PRAM: 3.6V Lithium
Power: 338 W
ADB: None
Serial: None
SCSI: Optional via PCI
USB: 2 - 12 MBit/s
FireWire: 2 - 400 MBit/s
Ethernet: 10/100/1000BaseT
Sound In: via USB
Sound Out: 16-bit stereo headphone jack, Apple Pro Speaker mini-jack.
History: The PowerMac G4 (Digital Audio) was the first speed increase for the PowerMac line in over a year. The G4 (Digital Audio) was so-named because of a new Built-in Amplifier, designed to drive USB speakers, along with the conventional minijack line output. The G4 (DA) included a number of architectural improvements, including a 133 MHz bus, 4 PCI slots, and a 1 GB/s main-memory bus. PCI throughput was enhanced by the removal of the PCI bridge. The main memory controller now communicates directly with the PCI bus. The 733 MHz model came with an innovative new SuperDrive which could read and write both CDs and DVDs. It was also bundled with Apple's iDVD, a simple DVD-Authoring application. 

