cost to operate.

[techlists at phpcoderusa.com]

Thank You Brian!!  PI maybe a project down the road.

On 2021-07-23 11:16, Brian Cluff via PLUG-discuss wrote:
> Power supply ratings are their maximum output they are capable of.
> Computer power supplies are going to be oversized (if the computer was
> built right) otherwise they wouldn't last for very long and would run
> very hot.  Computers, especially modern ones,  power usage is going to
> vary wildly from one second to the next based on it's load and what's
> connected to it.  If your system is just sitting there, on, doing
> nothing, it will likely be under 100watts, especially if the monitor
> is off, asleep or non-existent.  Servers will tend to draw more,
> because they have a lot more fans, hard drives, and power profiles
> that don't allow for them throttle as much.
> 
> Even if you do have a system that only uses 50 watts normally, I still
> recommend getting something low power like a raspberry pi to serve
> your  house because even if you have to buy the PI and the existing
> computer is free, the PI will quickly pay for itself and after that
> it's almost free to run it... and a lot more quiet and you also don't
> have to pay for your air conditioner to cool off the room that your
> higher power computer heated up which is also a very real cost that
> hasn't really been mentioned yet.
> 
> I had to argue with an electrician about power supply sizes when I
> build a computer lab with custom built computers with massively
> oversized power supplies.  He went around adding out all the wattage
> ratings of the power supplies and decided that my 30 computer lab
> would require a minimum of 15 circuits in order to not pop breakers. 
> I never could convince him that I was right, and that the breakers
> wouldn't pop and he finally did want I asked him to do which was to
> add 4 circuits, which we never has any problems with.
> 
> Brian Cluff
> 
> On 7/23/21 10:22 AM, Keith Smith via PLUG-discuss wrote:
>> 
>> Based on what we have been discussing I assume my 400 watt power 
>> supply may be drawing much less power based on actual usage. Therefore 
>> maybe my computer might only be using 60 watts... making the cost 
>> lower.
>> 
>> Your thoughts.
>> 
>> 
>> 
>> On 2021-07-22 21:39, Mike Bushroe via PLUG-discuss wrote:
>>> I usually use a mental rule of thumb that for every watt of 24/7/365
>>> power consumption costs about $1 per year. Obviously this is failing
>>> as electric rates keep going up. So to first order of magnitude a 100
>>> watt server would cost around $100 a year, but if the server was 
>>> using
>>> the whole 400 watts it would cost more like $400 a year.
>>> 
>>>>> If my home web server is using 100 watts an hour that mean 100
>>> watts *>> 30 days * 24 hours or 72K watts.
>>>>> 
>>>>> I'm thinking 72 * .1085 = $7.81 a month.
>>> 
>>>                KINDNESS
>>> 
>>> is most VALUABLE when it is GIVEN AWAY for
>>> 
>>>                    FREE
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