Inside the Machine

The PowerPC 750 (aka the G3)

The PowerPC 750—known to Apple users as the G3—is a design based heavily on the 603/603e. Its four-stage pipeline is the same as that of the 603/603e, and many of the features of its front end and back end will be familiar to you from our discussion of the older processor. Nonetheless, the 750 sports a few very powerful improvements over the 603e that make it faster than even the 604e, as you can see in Table 6-4.

Table 6-4. Features of the PowerPC 750

Introduction Date	September 1997
Process	0.25 micron
Transistor Count	6.35 million
Die Size	67 mm2
Clock Speed at Introduction	200-300 MHz
Cache Sizes	64KB split L1, 1MB L2
First Appeared In	Power Macintosh G3

The 750’s significant improvement in performance over the 603/603e is the ...