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Apple Macintosh LC III Specs

All Macintosh LC Models | All 1993 Models | Dynamically Compare This Mac to Others

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Apple Macintosh LC |||The Apple Macintosh LC III features a 25 MHz 68030 processor, 4 MB of RAM, and an 80 MB hard drive in a compact, easy-to-upgrade "pizza box" case.

Although the LC III looks effectively identical to the LC II before it, internally the LC III has significant improvements including a faster processor on a 32-bit bus, support for faster and more RAM and improved graphics capability. It has a different PDS slot, as well.

The consumer version of the LC III is the Performa 450.

Please note that the picture is an LC 475 and the LC III design is similar, but has a "flatter" front with a groove rather than a sleek curve. eventually will swap out this photo with a more precise one.

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.

February 10, 1993 February 14, 1994
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 1993.
25 MHz 68030
Details: This model has a 32-bit processor and a 32-bit data path.
Third-Party* 68882 (Optional)
Details: *A variety of third-party processor upgrades and accelerators were available.
25 MHz N/A
Details: N/A
Macintosh ROM 1 MB
Details: N/A
0.5k N/A
Details: N/A
72-pin SIMM 80 ns
Details: N/A
4 MB 36 MB
4 MB 1
Details: N/A
Dedicated* VRAM SIMM*
Details: *The Macintosh LC III has 512k of onboard VRAM and a single slot that accepts a 256k 100 ns VRAM SIMM.
512k* 768k*
Details: *512k of VRAM is soldered onboard. A single VRAM slot accepts a 256k VRAM SIMM for a maximum total of 768k of VRAM.
Single Display* 512x384-832x624*
Details: *By default, the Macintosh LC III only supports a single display, but a second one can be supported with the addition of an LC III PDS video card. With the default 512k of VRAM, the LC III can support a single display at 512x384 or 640x480 at 16-bit color and 832x624 at 8-bit color. Upgraded to 768k of VRAM, it can support up to 832x624 at 16-bit color.
Single Display* Variable*
Details: *The Macintosh LC III can support a second display with the addition of an LC III PDS video card. By default, it only supports a single display.
Details: By default, the Macintosh LC III was typically configured with an 80 MB internal SCSI hard drive.
None 1.44 MB (Auto)
Details: N/A
None None
Details: N/A
Details: By default, both the floppy disk and 3.5" hard drive bays are occupied.
Desktop Macintosh LC
Details: N/A
M1312LL/A Macintosh LC III
Details: M1312LL/A refers to a configuration with 4 MB of RAM, 512k of VRAM, and an 80 MB hard drive.
M1254 27
Details: Please note that these identifiers commonly refer to multiple models.

Also see: All Macs with the M1254 Model Number and 27 Gestalt ID.

For more about identifiers and how to locate them on modern Macs, please refer to's Mac Identification section.
3.6V Lithium N/A
Details: N/A
7.1 7.1-7.5.1, 7.5.3-7.6.1
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.
2.9 x 12.2 x 15.3 8.8 lbs (4 kg)
Details: In inches - height by width by depth, (7.4 cm, 31 cm, 38.9 cm).
US$1350 N/A*
Details: *As a collector's item, this model may still retain value.

Photo Credit: Apple Computer, Inc.

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 (DB-15) None
Details: N/A
1 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
1 (Omni) None
Details: N/A
1 (8-Bit Mono) None
Details: N/A
1 None
Details: N/A
1 N/A
Details: 100V-240V AC, 47-63 Hz Frequency, 50 Max Watts.

Icon Credit: Apple Computer, Inc.

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