Rich Teer wrote:
> On Sat, 1 Apr 2006, Dave (from the UK) wrote:
>
>
>>I've got a pair of Pentium II 450 MHz here which I removed the fans and a Sun
>>PCI card from which I have also removed the fan. In each case I removed them
>
>
> WHat SUn PCI card did you remove the fan from? I gave a SUn PCi IIpro, and
> removing the fan seems like a good way to get rid of some of its noise.

It was a Sun PCi II pro with a 733 MHz Celeron. I removed the plastic cover on
the heatink too. The fan is supposed to force air by the heatsink, but I think
the cover will create a lot of back-pressure so the flow must be pretty small.
However, I might be less inclined to do it in a machine with less airflow than
the U 80.

I had no problems. I've even run it for a few hours on one of these utilities
that make the CPU work flat out.

Someone else copied the idea too and as far as I know he had no problems. He
wrote some web pages on it, but they are in French.


http://www.sunwizard.net/html/articles/gt007.html

If you look at his pictures you can see where the fan is supposed to force the
air - along the length of the heatsink then out the ends. But look at all the
restriction with the heatsink. I don't have a PhD in the dynamics of airflow,
but I don't believe the fan can work very well against that back pressure, so I
think removing the cover and fan is quite sensible if you have airflow around it.


My machine is pretty packed - 4 GB, 4 CPUs, HVD SCSI card, SE SCSI card, GPIB
controller card, CD, tape drive, two disks ... but it works fine.



--
Dave K MCSE.

MCSE = Minefield Consultant and Solitaire Expert.

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