Macintosh Quadra 900

The Macintosh Quadra 900 was a high-end personal computer introduced with the Quadra 700 in October 1991 as Apple Computer's first computers in the Quadra series using the Motorola 68040 processor. It was discontinued in 1992, and succeeded by the very similar Quadra 950. The Quadra 900 was more expandable than the Quadra 700 but cost $7,200 in the U.S. The Quadra 900 could be upgraded to 256 megabytes of RAM—an astronomical amount for the time. The standard, as-shipped configuration for the 900 was 4MB.