Energy saving on netbooks?

Question

laptops

Actually, on my Asus 1005 netbook in the BIOS, it is possible to disable the network card, wifi, camera and card reader. Will turning them off help me extend my battery life? Or, when devices are turned off, the ability to work with them simply disappears, but they still continue to consume power?

Answer 1

In my opinion, the gain will be minimal in comparison with a software shutdown at the OS level. If the bios was written with fairly straight hands, then, of course, they will stop eating.
But much more can be gained from the battery by setting the processor to powersave and the screen brightness to a minimum. Just an order of magnitude more.

Answer 2

And I would score on match energy optimization and buy myself a reinforced battery, it will cost around 100 ye (a little less) and your laptop will work more than a working day without a break.

Answer 3

In the same steppe: If I programmatically disable Wi-Fi on the laptop, it, in theory, should stop scanning for networks, etc. => should consume slightly less energy, but is this true in practice?
PS: If this is important, then in my case the actors are Asus EEEpc 1015B Seashell AND Kubuntu 12.04 in an almost default configuration (at least I did not change anything from the firewood and the networking area)
PPS: The question is almost idle, because. with the declared 8 hours of battery life, the laptop works out, on average, about 7 hours, and I don’t really need more. But curiosity does not give rest :)