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Date:	Mon, 4 Feb 2008 22:25:59 -0800
From:	Steve Carter <scarter@vcnet.com >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: How much PSU is enough ?

Content Type: text/plain

There are two excellent arguments for "more is better".
I'm sure you've all heard them before, but for the
sake of completeness....

1) Reliability. With time, the PS will collect dust
and debris internally, hampering its cooling. Heat is
the enemy of electronic component reliability. Power
supplies are built to a price point, and oftentimes
parts, output capacitors specifically, are overstressed.
They fail sometime after the warranty has run out,
but before the useful life has ended. Oh well. Reducing
the load lowers the stress and prolongs the life of the
PS parts.

How many miles will your car run at 60 mph?
How many miles will your car run at 95 mph?
'Nuff said

2) Ridethrough of momentary line dropouts is based on full load.
If you're operating at some fraction of that, ridethrough time
increases (inverse) proportionately. More ridethrough time is
better. After all, you bought your computer to use it, not
watch it reboot.

-- Steve's .02

++++++++++++++++++++++++++++++
On 2/4/08, Jordan wrote, in part:
>450 Watts, 500 Watts ?
>
>This would be to support an AMD x2 4800+, 2 hard
>drives, a contemporary video card with 256M. of video
>RAM (perhaps 512), 2 optical drives, a floppy drive,
>and I'm not sure what else . . . but probably more.
>I'd rather have more "headroom" than needed, as
>opposed to just enough.
>
>Ray, Steve S., Steven, anyone ?
>
>(I think the last PSU I had might have been 350 watts,
>but that was a couple system generations ago.)
>
> Jordan
>=====================================================
>=====================================================

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