Macintosh IIx

The Macintosh IIx is a personal computer designed, manufactured, and sold by Apple Computer from September 1988 to October 1990. This model was introduced as an update to the original Macintosh II, replacing the 16 MHz Motorola 68020 CPU and 68881 FPU with a 68030 CPU and 68882 FPU running at the same clock speed.^[1] The initial price of the IIx was US$7,769 (equivalent to $20,655 in 2024) or US$9,369 (equivalent to $24,909 in 2024) for the version with a 40 MB hard drive.^[2]

Macintosh IIx

A Macintosh IIx
Developer	Apple Computer
Product family	Macintosh II
Release date	September 19, 1988; 36 years ago (1988-09-19)
Introductory price	US$7,769 (equivalent to $20,655 in 2024)
Discontinued	October 15, 1990; 34 years ago (1990-10-15)
Operating system	System 6.0.1-System 7.5.5
CPU	Motorola 68030 @ 16 MHz
Memory	1 MB or 4 MB, expandable to 128 MB (120 ns 30-pin SIMM)
Dimensions	Height: 5.5 inches (14 cm) Width: 18.7 inches (47 cm) Depth: 14.4 inches (37 cm)
Weight	24 pounds (11 kg)
Predecessor	Macintosh II
Successor	Macintosh IIfx
Related	Macintosh SE Macintosh SE/30 Macintosh IIci Macintosh IIcx

The 800 KB floppy drive was replaced with a 1.44 MB SuperDrive; the IIx is the first Macintosh to include this as standard.^[3]

The Mac IIx included 0.25 KiB of L1 instruction CPU cache, 0.25 KiB of L1 data cache, a 16 MHz bus (1:1 with CPU speed), and supported up to System 7.5.5.

The IIx was the second of three Macintosh models to use this case allowing dual floppy drives and 6 NuBus slots; the last model was the Macintosh IIfx. Apple's nomenclature of the time used the "x" to indicate the presence of the 68030 CPU as used in the Macintosh IIcx and IIvx.

Support and spare parts for the IIx were discontinued on August 31, 1998.

Timeline

Timeline of Macintosh II family models v t e