>I understand the stability of the power supply can make quite a 
>difference to the longevity of a computer.

I can confirm that!

I had an office location that burned thru computers. It was the only 
location of mine that routinely had computers and monitors up and die.

In the end, I tracked it to the power for the building. The main 
transformer feeding the building was faulty. During the day, when 
everything was turned on, the power was fine. At night, when everything 
in the building was off, the power would creep up well above tolerance. 
Since my standing orders were to leave all computers on all the time 
(increases their life significantly), this meant the computers would pull 
power from lines that peaked at around 150 volts.

After a few months of this, one component or another would fail.

Regular surge protectors were of no help, they are designed to clamp on 
major spikes, not slight increases. However, GOOD surge protectors, and 
almost all UPSes will level out the increase.

-chris
<http://www.mythtech.net>


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