rlf9 on 1/11/01 8:47 AM wrote:
>>>> circulation and the type of surface the 2400 is placed on are important
>>>> determinants in heat transfer efficiency. I've added an aluminum block to
>>>> connect the CPU directly to the aluminum pad of the lower case housing the
>>>> convection tube.
>>>
>>> Bob Friede replied...
>
> Any chance of a step by step how-to?
>
> Sidney replied...
>
>> Groan...Well, as lazy as I'd like to be, it's hard to refuse such a direct
>> request and actually a quite IMPORTANT modification.
>>
>> Heat reduction of the CPU is extremely important. The cooler it is the more
>> stable it will run and the longer it will live. It will even run
>> [snip]
I recalled reading a post a while back that mentioned the use of plumbers
putty as a heat transfer solution. Here it is if anyone is interested.
--------------------Originally sent 11/12/00 ------------------------------
Date: Sun, 12 Nov 2000 08:53:54 -0700
From: Greg <[EMAIL PROTECTED]>
Subject: [Duo2400] Re: CPU and heatsink connection to CPU stiffener
>A little while back in response to my questions about the high temperature
>of my 2300c some people made suggestions about material for replacing the
>putty-like stuff that joins the processor to the CPU stiffener (magnesium
>frame). I'm going to have to open my machine up sometime soon and if people
>wouldn't mind I'd be grateful for your suggestions again as to what I might
>use to ensure there is a good transfer of heat.
I used "plumbers putty" to replace the MISSING heat sink material on one
of my 280c's. Later I did a test of my 280c with the standard factory
heatsink foam material against my other 280c with the putty. Running the
same program, same OS, same settings, the duo with the putty actually
run a couple degrees F cooler. This is not a true scientific test. To be
more scientific I would have switch the putty and foam from one machine
to the other. Not gonna do it though!
As another experiment, I cut two pieces of aluminum plate about an inch
square each. Then squeezed a 1/8 inch thick layer of plumbers putty
between them. Next heated one plate with a soldering iron. Results: the
heat transfer from one plate to the other is not instant, but the second
plate does eventually get too hot to touch. The putty does not go limp,
but remains firm yet pliable even after cooling again.
The putty I refer to comes in a small plastic tub and is used for, among
other things, putting under the rim of a sink before you drop it into
the hole in the kitchen counter top. It is much the consistency of Play-Doh.
It should be noted that I tend to try things that are unconventional,
and sometimes not necessarily wise!
Greg
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-makmac
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