On Mar 13, 2009, at 6:54 AM, insightinmind wrote:
> I have a Dual 1GHz QS 2002 ... seems to be working fine ... just
> concerned about age.
>
> Would it be advisable to go on and remove the heatsink(s), clean
> the surfaces, and re-apply thermal grease? Sort of preventive
> maintenance?
>
In the specific cases of the Gig-E, DA, QS and similar, removing the
processor involves removing the heatsink.
In fact, the heatsink may be removed without removing the processor.
Apple employed a special heat transfer tape on these models. The tape
sticks to the underside of the heatsink, and the functional side of
the tape comes into contact with the processor. The heat transfer
material on the functional side of the tape is essentially single-use.
Carefully cleaning both the tape and the processor, and then applying
an appropriate heat transfer substance ("grease"/"paste"/whatever) is
required if a replacement tape is not available.
Those self-stick tapes are occasionally available. About a dollar or
so apiece.
Me, I just clean the surfaces appropriately and then apply silicone
thermal "grease".
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