RetroTechCollection

Macintosh Performa 637CD

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The Macintosh Performa 637CD is a personal computer manufactured by Apple Computer and released on July 18, 1994.[1] It is the Performa 636CD bundled with a display and a larger hard drive, sold to the higher-education market.

Macintosh Performa 637CD
Macintosh Performa 637CD
Specifications
ManufacturerApple Computer, Inc.
TypePersonal Computer
ReleasedJuly 18, 1994
DiscontinuedFebruary 1996
Intro priceUS$1,899
CPUMotorola 68LC040 @ 33 MHz
Memory4 MB RAM (expandable to 36 MB)
Storage350 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 636CD

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  • Hard Drive: 350 MB (vs. 250 MB)
  • Bundle: Included Apple display

Target Market

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Like other 636-series models, the Performa 637CD was available only through higher-education sales channels.[2]

Architecture and Processor

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The Performa 637CD uses a Motorola 68LC040 processor running at 33 MHz without an integrated FPU.

Memory and Storage

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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:

  • 350 MB IDE hard drive
  • 2× Apple CD 300i plus CD-ROM drive
  • 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 637CD was sold with:

  • Apple display
  • Keyboard and mouse
  • Higher-education 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)
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