Macintosh Performa 635CD

The Macintosh Performa 635CD is a consumer-oriented personal computer manufactured by Apple Computer and released on July 18, 1994.[1] It is a variant of the Performa 630CD sold as a complete bundle with modem, display, and additional software.

Macintosh Performa 635CD
Macintosh Performa 635CD
Specifications
ManufacturerApple Computer, Inc.
TypePersonal Computer
ReleasedJuly 18, 1994
DiscontinuedJuly 1995
Intro priceUS$1,849
CPUMotorola 68LC040 @ 33 MHz
Memory5 MB RAM (expandable to 36 MB)
Storage250 MB IDE hard drive, 2× CD-ROM, 1.44 MB floppy drive
DisplaySupports up to 832×624 at 8-bit color
SoundStereo 16-bit sound input/output
Dimensions4.3" H × 12.6" W × 16.5" D
Weight19 lbs (8.6 kg)
OS / FirmwareSystem 7.1.2P – Mac OS 8.1
PredecessorPerforma 600CD
SuccessorPerforma 6200CD
CodenameCrusader
Model no.M3076

Differences from Performa 630CD

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  • RAM: 5 MB standard (4 MB soldered + 1 MB SIMM)
  • Bundle: Included 14.4k modem and Apple Multiple Scan 15 Display

Architecture and Processor

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The Performa 635CD uses a Motorola 68LC040 processor running at 33 MHz. The "LC" designation indicates the processor lacks an integrated floating-point unit (FPU).

Memory and Storage

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The system ships with 5 MB of RAM (4 MB soldered, 1 MB SIMM). A single 72-pin SIMM socket allows expansion up to 36 MB total. 80 ns non-parity SIMMs are required.

Storage includes a 250 MB IDE hard drive, 2× CD-ROM drive, and 1.44 MB SuperDrive floppy.

Display and Graphics

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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

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The Performa 635CD was sold as a complete system including:

  • Apple Multiple Scan 15 Display[2]
  • 14.4k Teleport send-fax/data modem
  • Apple keyboard and mouse
  • Consumer software bundle

General Maintenance

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

Capacitor Replacement Guide

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See the Macintosh LC 630 Capacitor Replacement Guide page.

Troubleshooting

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See the Macintosh LC 630 Troubleshooting page.

Service Documentation

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The official Apple Service Source documentation for this model:

See Also

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References

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  1. Macintosh Quadra 630, Wikipedia—link(accessed 2026-02-10)
  2. Performa 630 and LC 630, Low End Mac—link(accessed 2026-02-10)