Power Mac G4
The Power Mac G4 (also known as Power Macintosh G4) was a series of personal computers made by Apple. It used the PowerPC G4 (PPC74xx) series of microprocessors. more...
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Original models
The original Apple Power Mac G4 was introduced at the Seybold conference in San Francisco on 31 August 1999, with 400 MHz, 450 MHz and 500 MHz configurations available. In October 1999, Apple was forced to postpone the 500 MHz due to poor yield of the 500 MHz chips. In response, Apple “speed dumped” the processor speed in each configuration by 50 MHz but caused some controversy by not decreasing the price of the machines.
The early 400 MHz (later 350 MHz) PCI-based "Yikes!" version used an motherboard identical to the one used in Power Macintosh G3 (Blue & White) computers (minus the ADB port), in a "graphite" colored case and with the new PowerPC 7400 (G4) CPU. The higher-speed (Sawtooth) models used a greatly modified motherboard design with AGP 2x graphics (replacing the 66 MHz PCI slot). In December 1999, the entire Power Mac G4 line was updated to the AGP motherboard.
The machines featured DVD-ROM drives as standard. The 400 MHz and 450 MHz versions had 100 MB Zip drives as standard equipment, and as an option on the 350 MHz Sawtooth. This series had a 100 MHz System bus and four PC100 SDRAM slots for up to 1.5 GiB of RAM. The AGP Power Macs were the first to include an AirPort slot and DVI video port.
The 500 MHz version was reintroduced on 16 February 2000, accompanied by 400 MHz and 450 MHz models. DVD-RAM and Zip drives featured on these later 450 MHz and 500 MHz versions.
Apple's name for all these early AGP models is Power Mac AGP Graphics. The code name Sawtooth was used.
The design was updated at the Macworld Expo New York on 19 July 2000; the new revision included dual-processor 450 MHz and 500 MHz versions, and a low-end single CPU 400 MHz model. It was also the first personal computer to include Gigabit ethernet as standard. Most people saw this revision as a stopgap release, because higher clocked G4s were not available; the G4’s Motorola XPC106 “Grackle” PCI/Memory controller prevented the G4 from hitting speeds higher than 500 MHz. The dual 500 MHz models featured DVD-RAM and Zip drives were optional on all models. These models also introduced Apple's proprietary Apple Display Connector video port.
Apple's name for this series is the Power Mac Gigabit Ethernet. The code name was Mystic.
Four-slot models
A new line with a revamped motherboard but the familiar "Graphite" case debuted on 9 January 2001. New features included a fourth PCI slot, a 133 MHz system bus, an improved 4X AGP slot, and a new "digital audio" sound system, giving the series its name "Power Mac Digital Audio". The models were offered in 466 MHz, 533 MHz, dual 533 MHz, 667 MHz and 733 MHz configurations, the latter two using a newer PowerPC 7450 processor. The number of RAM slots were reduced to three, accommodating up to 1.5 GB of PC133 SDRAM.
Read more at Wikipedia.org
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