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PowerPC G4 Microprocessor

The PowerPC G4 microprocessor used in the Power Mac G4 computer has many powerful features, including a new pipelined system bus that is more efficient than the system bus on the PowerPC G3 microprocessors. The new bus design, called MaxBus, allows for much greater efficiency of bus utilization than was possible with the previous design.

Features of the PowerPC G4 include:

• 32-bit PowerPC implementation

• superscalar PowerPC core

• Velocity Engine (AltiVec technology): 128-bit-wide vector execution unit

• dual 32 KB instruction and data caches (the same as PowerPC G3)

• support for up to 2 MB backside L2 cache

• on-chip L2 tag storage (twice as much as PowerPC G3)

• high bandwidth MaxBus (also compatible with 60x bus)

• fully symmetric multiprocessing capability

To find more information, use the links at PowerPC G4 Microprocessor .