Date: Tue, 05 Aug 2008 21:12:22 +0100 From: Vincent Hoffman <vince@unsane.co.uk> To: Gary Kline <kline@thought.org> Cc: FreeBSD-Questions@freebsd.org Subject: Re: general questions about 7.0 and computer efficiency...... Message-ID: <4898B426.9030007@unsane.co.uk> In-Reply-To: <20080805185612.GC47096@thought.org> References: <20080805181926.GA24000@thought.org> <20080805183320.GE60428@Grumpy.DynDNS.org> <20080805185612.GC47096@thought.org>
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Gary Kline wrote:
> On Tue, Aug 05, 2008 at 01:33:20PM -0500, David Kelly wrote:
>
>> On Tue, Aug 05, 2008 at 11:19:31AM -0700, Gary Kline wrote:
>>
>>> I kep track on the load on my main server, and it is rarely above
>>> 0.20. If the load is a poor metric of power use, what is
>>> better? (My new `Watt-o-Meter' is checking the power right now,
>>> but I would like to know what drink the most juice: disk,RAM,
>>> processor, OpSys? Number of hit/hours? I want my upgrades to
>>> be as cost-effective as possible, in other words.
>>>
>> There isn't a good generic answer to your question. "It all depends" on
>> exactly what hardware you have. A good rule of thumb is 10W for each
>> disk drive, but some were much higher. Pull the data sheets for your
>> drives.
>>
>> A Kill-A-Watt on the power cord is the best way to answer the total
>> question. My old ancient Dell Optiplex running 5.5 draws about 60 watts
>> including the APS 350CS UPS. Am not about to unplug it without good
>> reason:
>>
>> dkelly@AndrAIa {1004} uptime
>> 1:30PM up 670 days, 21:08, 2 users, load averages: 0.00, 0.00, 0.00
>>
>> I found a 10G drive in the trash yesterday. Would one day be a nice
>> upgrade for the 4G drive in the above.
>>
>
>
> the datasheets for the 40G drives are lost lost. but what is your
> best guuess about my old 1998 HP's (400MHz) compared to a newer,
> generic 1.8GHz processor? IIRC, my AMD 2.8GHz uproc sucks up
> around 75watts; the Intel was maybe 35w.
>
>
If your serious about power but need newer capacities, I'd look at
something like http://www.wdc.com/en/products/greenpower/index.asp and
maybe an intel atom (or after reading the reviews/benchmarks the via
nano when its available.)
With dual opterons at the moment my load average (except for when
compiling) is 0 - 0.1 but my electricity bill is significant so i'll be
looking into something atom/nano based in the near future, especially
when i can get a motherboard with CPU for less than 60 uk pounds.
>
>
>> --
>> David Kelly N4HHE, dkelly@HiWAAY.net
>> ========================================================================
>> Whom computers would destroy, they must first drive mad.
>>
>
>
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