How to Install a G4 Processor Upgrade Into an Aging Macintosh

As computer processor speeds continue to increase, owners of Apple's line of G3 and G4-based Power Macs progressively find themselves deficient in even the most basic specifications required to operate many of the latest and CPU-hungry applications. Although the price of a new Mac has remained consistent and beyond the financial reach of many, you can still add some vigor to maturing (and fading) Power Macs with a comparatively less expensive processor upgrade.

Instructions

Difficulty: Moderately Challenging

Things You’ll Need:

• Macintosh computer with a G3 or G4 processor
• G4 upgrade processor
• Phillips screwdriver
• Needle nose pliers
• Grounding bracelet or strap

1. Be sure that the processor upgrade that you select is compatible with your particular model of Apple Power Mac.
2. Ensure that all contents that should be included within the packaging of your processor upgrade are present.
3. While wearing your grounding bracelet, disconnect the power cable and all attached peripherals from your computer and remove the cover of your Power Mac.
4. Refer to your manual in order to locate the heat sink that covers the installed processor on your computer's logic board. Its exact location will vary depending upon the model. Using needle nose pliers, detach the clips that secure the heat sink and remove it from the logic board. For certain models, you will also need to disconnect and remove the accompanying fan prior to this step by locating and removing the two associated screws from the rear of the computer itself.
5. Remove the screws that secure the current processor's daughtercard to the logic board. After this, gently remove the daughtercard in its entirety (including the processor) from the board.
6. Remove any caps, covers or other safety material from your processor upgrade.
7. Align the holes in the daughtercard of the new processor with the existing holes in the logic board. Gently guide the processor onto the logic board, and press firmly. Replace the screws into their respective holes.
8. If applicable, replace the previously removed fan to its assembly, or install the fan that was included with the processor upgrade. Refer to the proper documentation.
9. Replace the cover of your computer, along with its power cable and previously disconnected peripherals.
10. If necessary, update the operating system and/or firmware of your Power Mac--consult the relevant documentation.
11. Turn on the computer, ensure that your system is functioning properly and take advantage of your newly accelerated Power Mac.

Tips & Warnings

• Before opening your computer or handling the processor upgrade, be sure that you are wearing a grounding bracelet or strap to avoid electrostatic discharge, which could easily damage your equipment.