![]() ![]() The Power Mac series was downgraded abruptly from 400, 450, and 500 MHz processor speeds to 350, 400, and 450 MHz. This forced Apple to take back the advertised 500 MHz models of PowerMac G4. Motorola had promised Apple to deliver parts with speed up to 500 MHz, but yields proved too low initially. The chip die measures 83 mm² and features copper interconnects. ![]() The chip operates at speeds ranging from 350 to 500 MHz and contains 10.5 million transistors, manufactured using Motorola's 0.20 μm HiPerMOS6 process. The 7400 (Codename: Max) debuted in late summer of 1999 and was the first processor to carry the G4 moniker. Besides desktop computers the PowerPC G4 is popular in embedded environments, like routers, telecom switches, imaging, media processing, avionics and military applications, where one can take advantage of the Altivec and its SMP capabilities. The PowerPC G4 processors are also popular in other computer systems, such as Amiga clones, like the Pegasos from Genesi. The PowerBook G4 has been replaced by the Intel based MacBook Pro. The last portable to use the G4 was the iBook G4 but now has been replaced by the Macbook. The last desktop model that used the G4 was the Mac Mini which now comes with an Intel Core Duo processor. A PowerPC G4 was also used in the eMac, first-generation Xserves, first-generation Mac minis, and the flat-panel iMac before the introduction of the G5 processor.Īpple completely phased out the G4 series for desktop models after it selected the 64-bit IBM-produced PowerPC 970 processor as the basis for its PowerPC G5 series. Macintosh computers such as the PowerBook G4 and iBook G4 laptops and the Power Mac G4 and Power Mac G4 Cube desktops all took their name from the processor. ![]() Apple has applied this name to various different (though closely related) processor models from Freescale, a former part of Motorola. PowerPC G4 is a designation used by Apple Computer to describe a fourth generation of PowerPC microprocessors. ![]()
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