The Macintosh IIx was the first Macintosh to ship with a Motorola 68030 processor. The IIx was introduced in September 1988 and discontinued in October 1990. The IIx is not a 32-bit clean Macintosh.
General Information
CPU
Motorola 68030 processor clocked at 16MHz. The IIx also featured a 68882 math co-processor.