Mac Pro and the electric bill

[pat500000]

Solar panal ftw.

 

[h9826790]

Mmmm, unless your machine removes power from the primary during sleep, that is not the case. Current draw is way down during sleep but voltages remain. True power off removes all voltages, bleeds off caps, etc. I don't think it's the same thing at all.

I think that's why AidenShaw use the word "virtually".

Power = voltage x current

Either the current or voltage greatly reduced, the overall power draw will be greatly reduced as well. When the machine wake up from sleep, still a huge power jump. And eventually, virtually the same power shock to the "power supply".

 

[AidenShaw]

Mmmm, unless your machine removes power from the primary during sleep, that is not the case. Current draw is way down during sleep but voltages remain. True power off removes all voltages, bleeds off caps, etc. I don't think it's the same thing at all.

During sleep only the +5SB rail is energized (and that rail is energized 24/7 whenever the computer is plugged in).

When you power up, the major +12V and other rails energize, creating a huge inrush surge.

https://discussions.apple.com/thread/1659537?start=0&tstart=0

Mac Pro startup or wake-up from sleep draws around 10-11 amps very very briefly...