Apple says that eventually all Macintosh computers will run System 7.0. Does that mean that all Macintosh computers will eventually be shipped with two megabytes of RAM?
Not necessarily. Apple is exploring various configurations of RAM, ROM, processor and hard disk that will support System 7.0. The total amount of memory that a Macintosh uses for system software is a combination of RAM and ROM. In general, when more software is put into ROM, a Macintosh requires less RAM. In addition, for Macintosh computers with PMMUs, the hard disk can be used to extend RAM with virtual memory. These technologies provide for many alternative configurations in the future.