Macintosh IIcx Mac IIcx <computer> (Mac IIcx) A version of {Apple}'s {Macintosh II} {personal computer}, introduced in 1989, with a {Motorola 68030} processor running at 16 MHz and up to 128 MB of {RAM} (120 ns, 30-pin {DRAM} chips). The IIcx requires System 6.0.3 or later and requires "Mode 32" or "32-bit Enabler" to use more than 8MB of RAM. It was discontinued 1991, and in 1996 is still considered one of the best-designed Macs ever. (1996-05-25)