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kpanchev · 16-01-2009, 13:26

General effectiveness of PC power supplies is 70-75%, so if it is let's say 700W max output power, it will use roughly 0.94 kW input. Again, this is IF you manage to utilize it to the max, which is very unusual. Normally it'll be at half power max, and most of the time in power saving mode. Expectations for running a headless pc non-stop (server or proxy probably) are around 0.5 to a pound a day max.

(Calculations are very rough and based on electricity prices taken out of thin air, as I can't remember them exactly)

16-01-2009, 13:26	#8
kpanchev Inactive Join Date: May 2007 Location: Farnborough, Hampshire Age: 54 Services: BB L package Posts: 175	Re: Power Cost Calculations for a PC General effectiveness of PC power supplies is 70-75%, so if it is let's say 700W max output power, it will use roughly 0.94 kW input. Again, this is IF you manage to utilize it to the max, which is very unusual. Normally it'll be at half power max, and most of the time in power saving mode. Expectations for running a headless pc non-stop (server or proxy probably) are around 0.5 to a pound a day max. (Calculations are very rough and based on electricity prices taken out of thin air, as I can't remember them exactly)