Power Mac G4 MDD CPU Heatsink Replacement

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Inleiding

The Power Mac G4 MDD had various heatsinks based of the processor, it had a pure copper heatsink for the dual 1.42Ghz model, and a thick finned heatsink for earlier models, and the later models had a thin aluminum finned heatsink.

Wat je nodig hebt

Stap 1 Case

Power Mac G4 MDD CPU Heatsink Replacement, Case: stap 1, afbeelding 1 van 2

Power Mac G4 MDD CPU Heatsink Replacement, Case: stap 1, afbeelding 2 van 2

The Power Mac G4 MDD: the last, and the fastest G4-based Mac. This computer boasted up to a Dual 1.42GHz PowerPC G4 CPU (though I have a single 1.25GHz).
Two USB 1.1 Ports
Assorted Audio
Video (ADC & DVI)
Networking (RJ-45 Ethernet/56k Modem)
Some later model MDD's (such as the dual 1.42GHz) Have a FireWire 800 Port Here:

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Stap 2

Power Mac G4 MDD CPU Heatsink Replacement: stap 2, afbeelding 3 van 3

Unplug the computer.
Unplug the power supply and all external connections from the computer.
Pull on the side lever and lower the side of the case.

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Stap 3 RAM

Power Mac G4 MDD CPU Heatsink Replacement, RAM: stap 3, afbeelding 1 van 3

Power Mac G4 MDD CPU Heatsink Replacement, RAM: stap 3, afbeelding 2 van 3

Power Mac G4 MDD CPU Heatsink Replacement, RAM: stap 3, afbeelding 3 van 3

The ram is between the graphics card, and the CPU, and removal is simple. Push the tabs down on both sides, this will free the ram, then lift it out.
The MDD uses a maximum of 2GB PC2700 DDR RAM (512MB X4) and has 4 slots.

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Stap 4 CPU Heatsink

Power Mac G4 MDD CPU Heatsink Replacement, CPU Heatsink: stap 4, afbeelding 1 van 1

Now, remove these three Phillips screws:
As there are two Phillips screws well, there are two that you can see in the photo, but you want to remove the screws that are behind them.

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Stap 5

Now, lift the heatsink up off the computer, it is pretty heavy, because it's a giant block of aluminum.
Be careful when holding it, the edges can be sharp, making it likely to get cut if you hold it wrong!
As you may be able to tell, i have applied a replacement coat of Arctic Silver 5 to keep my MDD cooler than the stock paste, it really does a great job too!

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Stap 6

The incredibly large heatsink, this thing is 5 Lbs of solid aluminum. Just like every other part in this, and many other Macs, the heatsink is made by: ...you guessed it, Foxconn.

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