10.11.2009, 21:24
240 w * 720 hr/m / 1000w/kW
172.8 kWh
My rate down here is 0.06/kWh so for me its
172.8 * $0.06CAD
= $10.368CAD
You would have to replace it with your own rate though, as i know power is much more expensive in the UK then it is here
Also remember that even though your psu is 240w it will probably only use 120-180 of that, if you wanted a more detailed calculation you could calculate the average usage of the psu by monitoring your outlet, and then calculating its efficiency, and using that information. For example a 1000w PSU that uses 200W and is 81% efficient at a 20% load will use around 30 extra watts
172.8 kWh
My rate down here is 0.06/kWh so for me its
172.8 * $0.06CAD
= $10.368CAD
You would have to replace it with your own rate though, as i know power is much more expensive in the UK then it is here
Also remember that even though your psu is 240w it will probably only use 120-180 of that, if you wanted a more detailed calculation you could calculate the average usage of the psu by monitoring your outlet, and then calculating its efficiency, and using that information. For example a 1000w PSU that uses 200W and is 81% efficient at a 20% load will use around 30 extra watts