Editing Macintosh Performa 636CD

{{Infobox computer
| name         = Macintosh Performa 636CD
| image        = [[File:Macintosh_LC_630.jpg]]
| caption      = Macintosh Performa 636CD
| manufacturer = Apple Computer, Inc.
| type         = Personal Computer
| release date = July 18, 1994
| discontinued = February 1996
| price        = US$1,649
| cpu          = Motorola 68LC040 @ 33 MHz
| memory       = 4 MB RAM (expandable to 36 MB)
| storage      = 250 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 600CD|Performa 600CD]]
| successor    = [[Macintosh Performa 6200CD|Performa 6200CD]]
| codename     = Crusader
| model        = M3076
}}
The '''Macintosh Performa 636CD''' is a personal computer manufactured by Apple Computer and released on July 18, 1994.<ref>{{cite web |url=https://support.apple.com/kb/SP221 |title=Macintosh Performa 636: Technical Specifications |publisher=Apple Inc. |access-date=2026-02-10}}</ref> It is the [[Macintosh Performa 636|Performa 636]] with an added CD-ROM drive, sold exclusively to the higher-education market.

== Target Market ==
Like the Performa 636, the 636CD was available only through higher-education sales channels (colleges and universities).<ref>{{cite web |url=https://en.wikipedia.org/wiki/Macintosh_Quadra_630 |title=Macintosh Quadra 630 |publisher=Wikipedia |access-date=2026-02-10}}</ref>

== Architecture and Processor ==
The Performa 636CD uses a Motorola 68LC040 processor running at 33 MHz without an integrated FPU.

== Memory and Storage ==
The system ships with 4 MB of RAM soldered to the logic board. A single 72-pin SIMM socket allows expansion up to 36 MB total.

Storage includes:
* 250 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

== Variants ==
* [[Macintosh Performa 636|Performa 636]] – Without CD-ROM
* [[Macintosh Performa 637CD|Performa 637CD]] – 636CD with display bundle and 350 MB HD

== 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 636]]
* [[Macintosh LC 630]]

== References ==
<references />

[[Category:Apple Vintage Computers]]