How to calculate the energy consumption?

Perene

Distinguished
Oct 12, 2014
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Guys, I have this computer:

* PSU: Seasonic 520W

* Core i7 4770
* MB Gigabyte H97M-D3H
* Video card: R7 265
* 8 GB RAM (Corsair Vengeance 1600 MHz)
* HD Samsung SATA 750 GB
* HD WD Blue 1 TB
* SSD Samsung EVO 840 120 GB
* CPU Cooler: Hyper 212X

*********** * LG W2452V - LCD **********

I used a calculator and got a result of 300W. I needed to know the exact value (in watts) to discover the kilowatt-hours (kWh) in a month.

This is that well-known calculator:
http://www.extreme.outervision.com/psucalculatorlite.jsp

Apparently this computer wastes 216 kWh in a month. That is because it is running 24/7. My last energy bill showed an usage of 560 kWh.

This is what I find odd - the computer is what is wasting more energy! For example, the monitor has 80W. 80 X 18h/day is equivalent to 5 times less what this PC is consuming. The kWh is worth 50 cents with taxes.

One more thing: most of the time the PC is not running a game or rendering a video. Instead, it's using the browser and uploading files. Soon I'll reduce the use dramatically.

Is everything I said... correct?

Should I assume at least 300W to calculate things?
 
Solution
The amount of power components actually use depends on usage and the real-world power draw is usually much lower than what the components are rated for since ratings are usually worst-case under normal (non-OC/OV) use.

The only way to get a reasonably accurate figure is to measure it yourself using something like a Kill-A-Watt over a few days of typical use to get a representative average.

InvalidError

Titan
Moderator
The amount of power components actually use depends on usage and the real-world power draw is usually much lower than what the components are rated for since ratings are usually worst-case under normal (non-OC/OV) use.

The only way to get a reasonably accurate figure is to measure it yourself using something like a Kill-A-Watt over a few days of typical use to get a representative average.
 
Solution