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See also: G3, Arthur

G3 , initially in the name of code Arthur , is a fine trade name invented 1997 by Apple, in reference to the third generation of the Microprocesseur S PowerPC, during the introduction of the PowerPC 750 . It is an improvement of the PowerPC 603, microprocessor of the second generation of PowerPC. Despite everything, it will appear much more powerful than PowerPC 603 and 604.

G3

The PowerBook G3 introduces the November 10th 1997 was based on PowerPC 750 to 250 MHz. The Power Macintosh G3 introduces the November 10th 1997 was based on PowerPC 750 to 233 or 266 MHz. The first IMac proposed August 1998 at January 1999 used PowerPC 750 to 233 MHz. The first IBook proposed in July 1999 used PowerPC 750 to 300 MHz.

PowerPC 750 was used in the iMac until in 2001. Moreover PowerPC 750CX was used in the iBook and the iMac. Finally PowerPC 750FX was used up to 900 MHz in iBook until the October 22nd 2003, date marking the end of G3 at Apple.

PowerPC 750

The PowerPC 750 (or PC 750 or MPC750 for Motorola) is a Microprocesseur 32 bits of the family PowerPC developed by IBM and Motorola. Its code name was Arthur . It has a Mémoire hiding place of first level of 32 Kio for the instructions and 32 Kio for the data. It has moreover a fast interface for a memory hiding place external of second level. It counts 6,35 million Transistor S and consumes between 5,7 and 8 Watts.

PowerPC 740 accompanied the introduction by the 750. It did not integrate a controller of memory hiding place of second level like the 750. It was practically not used by Apple.

Although the term G3 indicates a new architecture, PowerPC 750 is rather close to the PowerPC 603 E. Motorola and IBM then improved PowerPC 750 separately. Motorola produced a whole series of evolutions, of which microprocessors of series MPC 7400, marketed by Apple under the name of PowerPC G4 which have the symmetrical Multiprocesseur.

IBM produced PowerPC 750CX, 750CXe (integrating 256 Kio of mask of second level) and 750FX (integrating 512 Kio of mask of second level). This hiding place, less important than on some 750 of first generation laying out up to 1 Me, on the other hand is given rhythm at the speed of the processor. Apple used the CX, CXe and Fx in iMac G3 and iBook G3. All these microprocessors consume less than 10 Watts. G3 from IBM were the first microprocessors general public (well before competitor Intel or AMD) with being produced with technologies of interconnection to copper then ONESELF (Silicon-one-Insulator). PowerPC 750GX integrating 1024 Kio of mask of second level introduced in 2003 is not used by Apple. On the other hand of PowerPC 750 older also equipped with 1 Me of mask and using technology copper were used with frequencies going from 350 to 450 MHz in famous PowerMacintosh G3 White-Blue of Apple.

Another family of computers uses PC 750 , the machines Amiga New generation. AmigaOne SE used a processor 750CX given rhythm with 600Mhz, AmigaOne XE uses a given rhythm 750FX with 800Mhz, finally the µAone uses a given rhythm 750GX with 800Mhz (there also exists of Amiga One XE equipped with a PowerPC G4). The Pegasos was him also equipped with 750CXe, it is now equipped with a processor PowerPC G4

External bonds (in English)

  • Mac Systems: By Processor: PowerPC 740/750xx (G3)

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