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Originally posted by Dessy Fenix
well why not? No one ever answer this question.
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It’s a simple fact that every piece of hardware has a finite lifespan and it wastes power.
A monitor’s backlight is typically rated for a lifespan in the tens of thousands of hours, the capacity of a laptop battery will noticeably shorten with as few as 300 charge cycles, an SSD is good for around 3000 program/erase cycles.
In reality, you will have upgraded your computer long before you hit any of these limits. But by leaving your computer on, you are putting it under a constant stress, albeit a small one. It’s also generating heat, and that is one of the biggest factors in reducing the life of hardware.
It goes without saying that leaving something turned on when you aren’t using it is a waste of energy. But how much?
A 21.5-inch iMac from 2012 uses up to 56 watts in moderate use. This drops to 44W after being idle for five minutes, and to 18W with the screen off. In Sleep mode, it plummets to just 1W.
