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Apple Macintosh Performa 631CD Specs

All Macintosh Performa Models | All 1994 Models | Dynamically Compare This Mac to Others


Apple Macintosh Performa 631CDThe Apple Macintosh Performa 631CD features a 33 MHz 68LC040 processor, 8 MB of RAM, a 500 MB hard drive, and a 2X CD-ROM drive in a compact desktop case.

The Performa 631CD looks externally identical to the Performa 630CD, and is similar internally as well, but the 631CD has two RAM slots (rather than one) and originally shipped with a 15" color Apple monitor.


  • Tech Specs
  • Ports

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


July 18, 1994 July 1, 1995
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 1994.
33 MHz* 68LC040
Details: *This model has a 32-bit processor and a 32-bit data path. Sometimes this model is designated as having a 66 MHz processor, since the clock input runs at 66 MHz. However, the processor itself is not "clock doubled," so technically it only is a 33 MHz processor.
N/A None
Details: N/A
33 MHz N/A
Details: N/A
Macintosh ROM 1 MB
Details: N/A
8k N/A
Details: N/A
72-pin SIMM 80 ns
Details: N/A
8 MB 52 MB*
Details: *This model can support up to 52 MB of RAM with one 32 MB SIMM, one 16 MB SIMM and the 4 MB of onboard RAM.

Also see: Actual Max RAM of All G3 & Later Macs.
4 MB 2*
Details: *The first SIMM slot supports a 32 MB double-sided SIMM, but the second slot only supports a single-sided SIMM, so capacities are limited to 1 MB, 4 MB or 16 MB in the second slot.
Dedicated* Onboard*
Details: *1 MB of onboard 60 ns DRAM is dedicated to video function.
1 MB 1 MB
Details: The onboard VRAM cannot be upgraded.
Single Display* 640x480*
Details: *By default, this model only supports a single display, but a second one can be supported with the addition of an LC PDS video card. With the internal VRAM, the system is capable of supporting 512x384 and 640x480 at 16-bit color and 800x600 and 832x624 at 8-bit color.
Single Display* Variable*
Details: *This model can support a second display with the addition of an LC PDS video card. By default, it only supports a single display.
500 MB IDE
Details: By default, this model is configured with a 500 MB internal IDE hard drive. It does not support an internal SCSI hard drive.
2X CD-ROM 1.44 MB (Manual)
Details: N/A
None None
Details: N/A
1 LC PDS, Comm, Video I/O, TV* None
Details: *This model has a single LC PDS, Comm, TV, and both video input and video output expansion slots.
Desktop Macintosh Quadra 630
Details: N/A
M4148LL/A* Mac Performa 631CD
Details: *M4148LL/A and M4148LL/B both refer to this model, which varied by location sold.
M3076 98
Details: Please note that these identifiers commonly refer to multiple models.

Also see: All Macs with the M3076 Model Number and 98 Gestalt ID.

For more about identifiers and how to locate them on modern Macs, please refer to EveryMac.com's Mac Identification section.
4.5V Alkaline N/A
Details: N/A
7.5.1 7.5.1, 7.5.3-8.1
Details: Earlier and later versions of the Macintosh System/Finder and Mac OS are not supported.
4.3 x 12.6 x 16.5 19.0 lbs (8.6 kg)
Details: In inches - height by width by depth, (10.9 cm, 32 cm, 41.9 cm).
US$1600 N/A
Details: 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: *By default, no modem or Ethernet is provided. However, an optional 14.4k modem and AAUI-15 Ethernet card were offered.
None* None*
Details: *By default, S-video input and output were not provided. However, video input and output were offered via expansion cards.
1 (PlainTalk) None
Details: N/A
1 (8-Bit Stereo) 1 (Front-Mounted)
Details: N/A
1 None
Details: N/A
1 N/A
Details: 100V-240V AC, 50-60 Hz Frequency, 45 Max Watts.

Icon Credit: Apple Computer, Inc.

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