Editing Macintosh Performa 631CD

{{Infobox computer
| name         = Macintosh Performa 631CD
| image        = [[File:Macintosh_LC_630.jpg]]
| caption      = Macintosh Performa 631CD
| manufacturer = Apple Computer, Inc.
| type         = Personal Computer
| release date = July 17, 1995
| discontinued = February 1996
| price        = US$1,699
| cpu          = Motorola 68LC040 @ 33 MHz
| memory       = 8 MB RAM (expandable to 52 MB)
| storage      = 500 MB IDE hard drive, 2× CD-ROM, 1.44 MB floppy drive
| display      = Supports up to 832×624 at 8-bit color
| sound        = Stereo 16-bit sound input/output
| dimensions   = 4.3" H × 12.6" W × 16.5" D
| weight       = 19 lbs (8.6 kg)
| os           = System 7.1.2P – Mac OS 8.1
| predecessor  = [[Macintosh Performa 630CD|Performa 630CD]]
| successor    = [[Macintosh Performa 6200CD|Performa 6200CD]]
| codename     = Crusader
| model        = M3076
}}
The '''Macintosh Performa 631CD''' is a consumer-oriented personal computer manufactured by Apple Computer and released on July 17, 1995.<ref>{{cite web |url=https://en.wikipedia.org/wiki/Macintosh_Quadra_630 |title=Macintosh Quadra 630 |publisher=Wikipedia |access-date=2026-02-10}}</ref> It is an enhanced variant of the [[Macintosh Performa 630CD|Performa 630CD]], featuring double the RAM, a larger hard drive, and bundled peripherals.

The Performa 631CD was sold as a complete system bundle including a modem and display, making it a turnkey solution for home users.

== Differences from Performa 630CD ==
* '''RAM:''' 8 MB standard (vs. 4 MB)
* '''RAM Slots:''' Two 72-pin SIMM sockets (vs. one)
* '''Hard Drive:''' 500 MB (vs. 250 MB)
* '''Bundle:''' Included modem and display

== Architecture and Processor ==
The Performa 631CD uses a Motorola 68LC040 processor running at 33 MHz without an integrated FPU. The system bus operates at 33 MHz.

== Memory and Storage ==
=== RAM Configuration ===
The system ships with 8 MB of RAM (4 MB soldered, 4 MB SIMM). The logic board has two 72-pin SIMM sockets, allowing expansion up to 52 MB total. 80 ns non-parity SIMMs are required.<ref>{{cite web |url=https://lowendmac.com/1994/performa-630/ |title=Performa 630 and LC 630 |publisher=Low End Mac |access-date=2026-02-10}}</ref>

=== Storage Systems ===
* 500 MB IDE hard drive
* 2× Apple CD 300i plus CD-ROM drive
* 1.44 MB SuperDrive floppy

== Display and Graphics ==
1 MB of dedicated DRAM for video. Supported resolutions:
* 512×384, 640×480: 16-bit color
* 800×600, 832×624: 8-bit color

== Bundle Contents ==
The Performa 631CD was sold with:
* 14.4k modem
* Apple display
* Keyboard and mouse
* Consumer software bundle (ClarisWorks, At Ease, etc.)

== General Maintenance ==
For maintenance procedures, refer to the [[Macintosh LC 630 General Maintenance]] page.

== Capacitor Replacement Guide ==
See the [[Macintosh LC 630 Capacitor Replacement Guide]] page.

== Troubleshooting ==
See the [[Macintosh LC 630 Troubleshooting]] page.

== Service Documentation ==

The official Apple Service Source documentation for this model:

<pdf width="800" height="500">File:Performa_630_series.pdf</pdf>

== See Also ==
* [[Macintosh Performa 630CD]]
* [[Macintosh LC 630]]

== References ==
<references />

[[Category:Apple Vintage Computers]]