Thursday, November 15, 2012

PC Power Consumption Normal vs Sleep Modes

               I've always wondered about the difference between the power consumption of my PC when it is idle and when it is in sleep mode. Well I found out that a PC on idle state consumes between 70 - 200 watts depending on many variables like CPU type, Mother board, number of hard drives mounted, size and type of a the screen connected to this desktop computer.

Whereas, a computer on its sleep mode will consume no more than 2-8 watts!. This is roughly about 4% of power consumption!. This is a very good thing, but what is the use of these numbers?

It is very simple, when you know that you are not going to use your computer for the next half an hour or more, it is better if you turn your computer to sleep mode. If you have a windows vista or more this can be easily done from the control panel  under the power saving options.

What is more astonishing is that when the computer is turned off, it will still consume up to 2 watts of energy!. Which means that your computer is consuming power for nothing!. To prevent this from happening, you can pull the main plug of the computer out of the power socket. This will ensure that your computer is not consuming any power at all.

But you might think that if the difference between turning off the computer and having it in sleep mode is not that big (a mere 2 watts in consumption) the why do I have to turn my PC off? I can keep my PC in sleep mode and there no need to turn it off.

But wait, if you disregarded the energy consumption of the PC in sleep mode you need to think about other aspects regarding this. The most important aspect is that when the computer is in sleep mode it will be already in the operating system and the RAM will still have data in it, if electricity went down for any reason then this means that the computer will lose power and this will remove all data in the memory and might lead to damaging some files related to the operating system (like the dll files that are for windows) and on the long run this will lead to failure in the performance of the operating system.

Finally, we'd like to urge you to save the environment by turning to sleep mode when you are away from your PC, but we don't recommend sleeping your computer for more than 8 hours, as this is a risky thing as the PC cord might be accidently plugged out or electricity might fall down.

If you have any thing to say please post a comment below, thank you!