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power=cost
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Posted by: TheeMon
hmmmm how much does a: cost a year to run? or month 
ATX power supply 400(whatever units)
moniter (???)
water bed lol
(just estimates  and i mean running non stop, im trying to prove some1 wrong,he said all this costs over 100 bucks a month to run im like maybey a year lol)
im think 20bucks a year on computer, and maybey 100 on water bed a year really dunno though
Posted by: Kdr Kane
Assuming $0.10 per kilowatt-hour electrical cost:
Basic Electrical Calculation
An important first step in controlling energy consumption is determining how much your individual equipment uses. The basic unit of measure for electricity is watts. Since the number of watts measured over a period of time (by hours) can accumulate into the tens of thousands, energy consumption is measured in kilowatt-hours (one kilowatt is equal to 1,000 watts). A kilowatt-hour (kWh) equals one kilowatt of electricity flowing for one hour. For example, a 1,000-watt light bulb, on for one hour, consumes one kWh of electricity. Ten 100-watt light bulbs, on for one hour, would also consume one kWh of electricity.
To approximate energy consumption for electric equipment, find the wattage for the equipment. It will most likely be stamped on a metal nameplate or in a plastic covering on the back or bottom of the equipment. Divide the wattage by 1,000 to obtain the kilowatts used. Multiply this by the number of hours the equipment is in operation and by your cost per kWh. This will give you the operating cost.
Equation for approximating energy consumption for electric equipment:
Cost of operation per month = (watts/1,000) x (hours used per month) x (cost per kWh)
watts* x hours per day = watt-hours per day
watt-hours per day x days per year = watt-hours per year
watt-hours per year ÷ 1,000 = kilowatt-hours (kWh) per year
kWh per year x cost per kWh = total annual energy cost
** 400 Watt Computer and Monitor
400 x 24 = 9,600
9,600 x 365 = 3,504,000
3,504,000 / 1,000 = 3,504
3,504 x $0.10 = $350.40
** 250 Watt Computer and Monitor
250 x 24 = 6,000
6000 x 365 = 2,190,000
2,190,000 / 1,000 = 2,190
2,190 x $0.10 = $219.00
Posted by: redwench
that assumes of course, that you run both your comp and monitor 24/365 and that you draw full power on both. which is unlikely.
i doubt i pull more than 200 watts on my comp. and i turn my monitor off when im not actively using it.
the water bed is the more expensive of the choices. it takes a lot of energy to heat water.
the largest continuous electricty usage in most homes is the refrigerator. unless you have a water bed :P
but if you ran a large monitor, 400w comp, and water bed 24/365 (which wouldnt happen, but this is a exercise) youd come pretty close to 100 a month.
kane, you forgot the monitor in your calc, btw :P
Posted by: Kdr Kane
 Quote:
** 400 Watt Computer and Monitor
400 x 24 = 9,600
9,600 x 365 = 3,504,000
3,504,000 / 1,000 = 3,504
3,504 x $0.10 = $350.40
** 250 Watt Computer and Monitor
250 x 24 = 6,000
6000 x 365 = 2,190,000
2,190,000 / 1,000 = 2,190
2,190 x $0.10 = $219.00
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It says Computer and Monitor. There are two costs listed and you can determine a cost close to what you think you use on average. 
And I gave the formulas so you could work it out yourself. hehe
Posted by: redwench
yes that is indeed what you said
but the comps power supply alone is going to run 250-400, depending on what you have. he has a 400. then you have to add in the monitor. which is probably another 300 watts or more.
thats 700 or more.
which should be in the $500/yr ballpark. then you add in the waterbed. ^^
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