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Upgrading Pentium III CPU

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4 replies

by rick

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I am attempting to replace two 500mhz Pentium III CPUs with two 850s.

But, I cannot seem to be able to remove the old Pentium IIIs.

The are held in with a Grounded Retention Mechanism and I cannot get the pins out.

What is the trick?

Thanks in advance.

4 replies

by thechas

I am assuming that these are "Slot 1" CPU's.

There should be a tab at each end of the CPU that you press towards the center to release the catches.
You should then be able to remove the CPU, leaving the retention mechanism in place.

Chas

by thechas

Oops; I was looking at the older style slot 1 CPU.

I opened up a P3 that I have, and noticed how different the newer style retention mech is.

Have you tried carefully prying the clips towards the outside just enough to allow you to pull up onthe CPU?

Otherwise;
NOTE: Use proper ESD precautions for the following steps. An ESD bench mat is recommended.

Remove the motherboard from the chassis so that you have room to work.

1. Using a thin flat blade screwdriver, wedge the bladeunder the head of the snap rivets, and carefully pry the rivet heads up.
2. Place the motherboard upside down on the bench. Support the retention clips so that they can take some force, but that the rivet heads are not blocked.
Use a flat punch or nail set to push each rivet out. Use very gentle force to avoid damage to the motherboard.

Chas

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