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Calculate power consumption?

U

uvi

Weaksauce
Joined
Sep 16, 2004
Messages
126
Im lookin to host a lan in my area and need a way to figure out how much voltage/wattage/amperage/whatever some test pc's draw from the outlet, to know what kind of power i'll need to supply.
 
it depends what everybody's setup is. it varies really. just be ready for high power consumption
 
yea, i know it varries. Im anticipating more power than the building can supply. So then i need external power, i.e. generator(s). But generators come in all flavors, so i need to know how i can estimate my power consumption needs. A best/worst case scenerio.
 
My folding rig run at aprox 250 Watts each.
But they are dual CPU boxen and they run headless.
So drop a CPU but add a Vid card and you will be looking around 200-250 per computer.
Monitors are probably between 30 Watts ( small flat panel ) to 130 Watts ( large CRT ).
So I would recon somewhere between 250 & 400 Watts for the adverage LAN system.

Luck......... :D
u=Tigerbiten.gif
 
How many people are you planning on going to the LAN party and how much power are they going to provide to you?? They might have the number in amps so you might have to convert wattage to amps: wattage/voltage=amps
 
i need 150kw of power and ill just leave it at that :) ive found my generator and distrobution panels necessary for getting computers to interface with that kind of power source.
 
there are alot more varaibles than meet the eye

http://takaman.jp/D/index.html?english
that would give you the theoretical maximum
that reflects the nature of any calculator
its additive of all the maximum draws for each component
but all components rarely if ever need their maximum draw at the same time

for instance a HDD may require 2A on the +12V line at spinup to overcome inertia
but only .05A while spinning, same for fans high amp draw at spinup
(not using the opticals, then you just have a very low standby draw)
the opposite applies to an IC (CPU/GPU) from Idle to load

then the efficiency of a given PSU at a given load comes into play
http://www.silentpcreview.com/article177-page4.html (for a Neopower)
from 110Watts AC (for a 65 watt DC load) to 596 Watts AC (for a 460 watt DC load)
but that might be enough for you to start averaging

modern supplies are generally more efficient,
but Id pick a 60 > 65% efficiency rating and then
overestimate the actual realtime draw for each computer as a safety margin
(say 75 > 80% of the theoretical maximum of an average computer config)
 
150 kw of power. Wow that is a ton of power. Are you having like 500 people there or are you gonna start up a factory in that building for the night or something like that??
 
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