Apple WS 6150 manual

Basics	Power Macintosh System Overview - 3
	Compatibility is not limited just to applications. INITs,
	CDEVs, drivers, and other Macintosh utility software also
	work on PowerPC processor-based Macintosh systems. So do
	AppleTalk devices (such as printers), SCSI devices (such as
	hard drives and scanners), ADB devices (such as mice,
	trackballs, and keyboards), and other Macintosh cards and
	peripherals.
	The primary operating system for PowerPC processor-
	based Macintosh computers is System 7. The operating
	system has been optimized for the highest performance on
	the PowerPC processor. This optimization of System 7
	benefits applications written for 680x0 systems as well as
	those developed specifically for PowerPC processor-based
	systems.
	And while PowerPC-based Macintosh systems running
	native applications offer two to four times the performance