Apple G3 manual Graphics controller

Graphics controller and video expansion

3 PCI slots

Audio/Video card slot

In addition, the logic board design of the Power Macintosh G3 systems exhibits the following characteristics in these vital areas:

Processor. These computers use the innovative, next-generation PowerPC G3 processor, which was designed specifically to provide increased power at affordable cost. It does so through three major innovations: a state-of-the-art 0.25-micron manufacturing process, optimization for the Mac OS, and a new, more efficient approach to level 2 cache known as backside cache. Backside cache boosts performance far above the performance of earlier systems—even those with higher clock speeds—by positioning the cache directly on the processor module and making it directly accessible through a faster, dedicated bus. This bus can run at varying speeds in proportion to the processor speed. So, for example, the Power Macintosh G3 system based on a 266-megahertz PowerPC G3 processor features a 133-megahertz dedicated backside bus—more than twice the speed of the system bus.

I/O: graphics, 2 serial,	Memory. The memory controller
	and PCI bridge support the Power
Ethernet, ADB, SCSI	Macintosh G3 systems’ three memory
	slots and three PCI expansion slots.
	These systems make use of a faster,
I/O ASIC	industry-standard memory, SDRAM,
	which adds to both their economy
Memory	and their availability.
	Graphics controller. The
controller
and PCI bridge	Power Macintosh G3 series systems
	incorporate an ATI RAGE II+ graphics
	controller, which not only provides
	outstanding performance, but also
	enables far greater expandability
	(2MB to 6MB) than was previously
	available, so users can choose the
PowerPC G3	level of graphics performance that
	meets their needs.
processor with
	I/O ASIC. This component
backside cache
3 DIMM (RAM) slots	provides support for the input and
	output of all standard Macintosh

graphics functionality and Apple Desktop Bus (ADB), serial, and SCSI connections. It also efficiently incorporates 10BASE-T Ethernet, to meet users’ growing demands for easy and immediate access to high-performance networking capabilities.

The “why”

The motivation behind this innovative product design is the same simple idea that drives all of Apple’s efforts: bringing truly outstanding computing performance to our users more and more easily and economically. So when you’re looking for the computer that’s just right for you, don’t just look at the numbers (things such as processor speed and hard disk capacity). Because today, it’s more important than ever to consider overall product design.

Apple Computer, Inc. 1 Infinite Loop Cupertino, CA 95014 (408) 996-1010 www.apple.com

© 1997 Apple Computer, Inc. All rights reserved. Apple, the Apple logo, Mac, Macintosh, and Power Macintosh are

trademarks of Apple Computer, Inc., registered in the U.S.A. and other countries. Java is a trademark or registered trademark of Sun Microsystems, Inc. in the U.S.A. and other countries. PowerPC is a trademark of International Business Machines Corporation, used under license therefrom. Other product and company names mentioned herein may be trademarks of their respective companies.

November 1997. Product specifications are subject to change without notice. Printed in the U.S.A.

L02589A