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Apple Macintosh IIx Specs

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Apple Macintosh IIxThe Apple Macintosh IIx features a 16 MHz 68030 processor, a 68882 FPU, 1 MB or 4 MB of RAM, a 40 MB or an 80 MB hard drive, and the option of an Apple Macintosh II video card in an easy-to-expand desktop case.

The Macintosh IIx uses the same "Open Mac" case as the Macintosh II, but shipped standard with a faster processor and a faster FPU -- it was the first Mac to ship with the 68030 processor and the 68882 FPU -- as well as dual 1.44 MB disk drives. It also requires significantly less "tinkering" to upgrade the RAM and other internal components.

To purchase or upgrade a vintage Mac -- and newer Macs -- see site sponsor OHS.

  • Tech Specs
  • Ports

Click on the category for related details. The most commonly needed info is "open" by default, but all info is important.

September 19, 1988 October 15, 1990
Details: The "Introduction Date" refers to the date a model was introduced via press release. The "Discontinued Date" refers to the date a model either was replaced by a subsequent system or production otherwise ended.

Also see: All Macs introduced in 1988.
16 MHz 68030
Details: This model has a 32-bit processor and a 32-bit data path.
N/A 68882
Details: N/A
16 MHz N/A
Details: N/A
Macintosh ROM 256k*
Details: *The Macintosh IIx ROM is "32-bit dirty."
0.5k N/A
Details: N/A
30-pin SIMM* 120 ns
Details: *PAL SIMMs required for 4 MB and larger capacities.
1 MB, 4 MB 128 MB*
Details: *With 32-bit addressing and the MODE32 system extension this model is capable of supporting 128 MB of RAM (16 MB SIMMs in all eight slots).

Also see: Actual Max RAM of All G3 & Later Macs.
None 8*
Details: *RAM SIMMs must be installed in groups of four.
Video Card* Video Card*
Details: *The standard video card options for the Macintosh IIx had either 256k or 512k of VRAM and supported multiple resolutions.
256k, 512k* 256k, 512k*
Details: *The standard video card options for the Macintosh IIx had 256k or 512k of VRAM, but numerous third-party video cards also were available.
Up to 6 Displays* 512x384, 640x480*
Details: *The Macintosh IIx can support multiple displays -- originally at great cost -- using multiple video cards in NuBus expansion slots. The Macintosh IIx also can support multiple resolutions, 512x384 and 640x480 are common. Portrait (vertical orientation) displays also were popular.
Dual/Mirroring* Variable*
Details: *This model can support multiple displays with multiple video cards.
40 MB, 80 MB* SCSI
Details: *The Macintosh IIx was offered with a 40 MB or an 80 MB internal SCSI hard drive.
None 1.44 MB x2 (Auto)*
Details: *Second floppy drive optional.
None None
Details: N/A
6 NuBus None*
Details: *There are no free expansion bays with dual disk drives and one hard drive installed. Third-party products were available to install additional and other storage options.
Desktop Macintosh II
Details: N/A
M5280* Macintosh IIx
Details: *M5280 refers to a configuration with 1 MB of RAM and a single 1.44 MB floppy drive. M5830 refers to a configuration with 4 MB of RAM, a 1.44 MB floppy drive, and an 80 MB hard drive with the Mac System installed and M5850 refers to the same configuration but with the A/UX operating system installed.
M5840 7
Details: N/A

Also see: All Macs with the M5840 Model Number and 7 Gestalt ID.

For more about identifiers and how to locate them on modern Macs, please refer to's Mac Identification section.
3.6V Lithium (x2) N/A
Details: N/A
6.0.1 6.0.1-7.5.1, 7.5.3-7.5.5
Details: Earlier and later versions of the Macintosh System/Finder and Mac OS are not supported.

For systems capable of running older versions of the Mac OS -- as well as modern ones -- please see site sponsor OHS. OHS specializes in heavily upgraded Macs capable of running both Mac OS X and Mac OS 9 applications.
5.5 x 18.7 x 14.4 24.0 lbs (10.9 kg)
Details: In inches - height by width by depth, (14 cm, 47.5 cm, 36.6 cm).
US$7800, US$9300 N/A*
Details: *As a collector's item, this model may still retain value.

Photo Credit: MacUser Magazine (Radius Advertisement).

Click on a category for additional details. The most commonly needed info is "open" by default, but all info is important. The icons correspond with the icons for each port on the computer.

1* None
Details: *Video port provided by required video card. No onboard video port.
2 1 (DB-25)
Details: N/A
2 None
Details: Serial ports are marked by printer and modem icons.
None None
Details: N/A
None None
Details: N/A
None None
Details: N/A
1 (8-Bit Mono) None
Details: N/A
1 None
Details: N/A
1 N/A
Details: 90V-270V AC, 48-62 Hz Frequency, 230 Max Watts.

Icon Credit: Apple Computer, Inc.

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