Power bill for 20-25 computers....

[aphex]

Anyone roughly know how much it will cost to have 20-25 computers running in one home??

 

[LaBang]

seti?

 

[FoBoT]

in florida?

do you know what your cost per killowatt hour is?

the average for the state of florida in 2000 was 7.76 cents
which is fairly low, about the median for the US

 

[Viper GTS]

Figure it out, come up with an estimate on the continuous power draw.

You'll need the draw per PC the hours you'll have them on, & the price per kwh.

Viper GTS

 

[iamwiz82]

total wattage/1000 = kilowatt

x kilowatts *24hours in a day * 30 days in a month * the rate you are charged = total cost per month based on kilowatt hours.

I'm charged 8.5 cents per kwh. So, 20 PCs with 300watt PSUs = 6000 watts/1000 = 6kw per hour

6kw * 24 * 30 = 4320kwh per month * .085 dollars = $367.20 per month just with computer. This does not include monitors(200-300 watts for CRT) or speakers

 

[aphex]

<< total wattage/1000 = kilowatt

x kilowatts *24hours in a day * 30 days in a month * the rate you are charged = total cost per month based on kilowatt hours.

I'm charged 8.5 cents per kwh. So, 20 PCs with 300watt PSUs = 6000 watts/1000 = 6kw per hour

6kw * 24 * 30 = 4320kwh per month * .085 dollars = $367.20 per month just with computer. This does not include monitors(200-300 watts for CRT) or speakers >>



Cool, thanks... Dunno if this will work then, might be too expensive... Id also be running UD Cancer on them, not seti 🙂

I wont need monitors either, i'll just VNC to each of them.

 

[mpitts]

I would be more concerned about the circuit that they will be running off of than the bill. You might want to find out the power requirements of each PC.

 

[JEDI]

ahh..speakers..that explains why my power bills are so high.

i leave my machine on over night. i turn off the lcd monitor, but my electric bill is double the norm. ($50 vs $25)

if i turn off the speakers, do i need to turn off the subwoffer separately?

 

[dakata24]

i thought power supplies use less than what is listed as the wattage of the power supply? and that, for say, a 300 watt is like for spikes or something?

what kind of computers are these btw? sounds like a cool setup for a good cause 🙂

 

[Viper GTS]

<< i thought power supplies use less than what is listed as the wattage of the power supply? and that, for say, a 300 watt is like for spikes or something? >>



He is correct.

Look on UPS manufacturer pages for typical PC + monitor draw (although you can probably eliminate the monitor). My guess is it's around 110W for a typical desktop PC running under 100% load.

My PC of course is another story. 😀

Viper GTS

 

[Cuular]

Where I live at here in california, west LA, it costs me 8.00 a month extra to have 2 AMD XP 2000+'s running UD 24X7. Normal power bill without computers was 42.00 a month, with the 2 computers on 24X7 it is 50.00

I am running UD Cancer project on them. They get about a 5 hour break from that while I play DAoC or Dungeon Seige in the evenings, but other than that they are running UD.

I have no idea how much I pay per a KWH. So it could be more or less depending on what that cost in your area is.

 

[yakko]

High enough that you won't notice when I hook mine into your power supply.

 

[vi edit]

The monitors are what will kill you. My *guess* would be around $300 or.

 

[xaigi]

the most that you can expect a computer to require is 250W.

1 kwH ~ 10 cents

4 Comps = 10 cents/hr
24 Comps = 60 cents/hr

24 hrs = 60 x 24 = $14.40/day
(I'm assuming 24 hours because I'm assuming that you want these
computers to do some sort of clustering.)

30 days = 14.40 x 30 = $432/mo.

You could probably cut costs by using low-end videeo cards and minimizing the use of HDs and cdrom drives.

 

[aphex]

<< The monitors are what will kill you. My *guess* would be around $300 or. >>



I wont be using any monitors. Only for initial setup.