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Date:	Mon, 11 Feb 2008 20:46:31 -0800
From:	Tom Brown <thomabrown@gmail.com >
Reply-To:	scoug-help@scoug.com
To:	scoug-help@scoug.com
Subject:	SCOUG-Help: How much PSU is enough ?

Content Type: text/plain

J R FOX wrote:
> --- Steve Carter wrote:
>
>> There are two excellent arguments for "more is
>> better".
>
>> 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.
>
>
> Thanks for your reply, Steve. I'm not at all sure
> that I *understood* it, but I've tentatively decided
> to get a Corsair 520. That looks like a reasonable
> compromise to me, but trying to stick with quality.
>
> One (related ?) problem I've been running into is that
> my UPS (which has a capacity limit of 500watts worth
> of stuff being plugged into it) has been tripping out
> occasionally, even though it recently had a full
> service with new batteries installed. It has
> heretofore been a very reliable 1100va unit.
> Something else may be aging in there, and I'm leaning
> towards getting a heftier UPS. I too dislike having
> stuff reboot on me. And I don't want to overtax what
> will be in the rebuilt tower, which is certain to
> exceed the current draw from what was previously
> there.
>

Just for a reference point, my large system has a PC Power & Cooling Turbocool
850, which is rated to run the Tyan Thunder K8WE with 2 AMD Opterons, 2 video
cards in SLI mode, and a goodly number of drives. I currently have 2 optical
drives, 2 SCSI, and 1 IDE running on it. Never a hiccup, of course!

For some interesting info, see:

http://www.pcpower.com/technology/myths/

What do you have hung on your UPS?

--
Tom Brown, Catherder
thomabrown at gmail dot com
Member SCOUG, V.O.I.C.E., & SDAA

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