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<blockquote data-quote="Janx" data-source="post: 6213233" data-attributes="member: 8835">In the old days, almost no.&nbsp; The CPU got 5 volts of power regardless of what it was doing.&nbsp; It went through the same number of cycles per second.Though increased processing did generate more heat (more electricity consumed) and increased heat causes the thermal sensors to trigger the fans to increase speed.Add to that concept today, that processors include voltage/speed regulators so at idle usage, it gets less juice and less speed.&nbsp; Once utilization cranks up, it gets more power.A lot of this technology was delivered in blade servers, as a means of reducing operating expense in states like California where electricity costs were high.Gradually, this tech gets implemented in more consumer grade stuff like laptops (which is valuable for improving battery life).Now does sending an email consume more electricty?&nbsp; Only a marginal amount compared to just having outlook open.And in the scope of how much juice your PC is using compared to your AC system?&nbsp; It's all trivial.&nbsp; Turning off your PC for a day isn't going to give a huge difference in your light bill.</blockquote>

[QUOTE="Janx, post: 6213233, member: 8835"] In the old days, almost no. The CPU got 5 volts of power regardless of what it was doing. It went through the same number of cycles per second. Though increased processing did generate more heat (more electricity consumed) and increased heat causes the thermal sensors to trigger the fans to increase speed. Add to that concept today, that processors include voltage/speed regulators so at idle usage, it gets less juice and less speed. Once utilization cranks up, it gets more power. A lot of this technology was delivered in blade servers, as a means of reducing operating expense in states like California where electricity costs were high. Gradually, this tech gets implemented in more consumer grade stuff like laptops (which is valuable for improving battery life). Now does sending an email consume more electricty? Only a marginal amount compared to just having outlook open. And in the scope of how much juice your PC is using compared to your AC system? It's all trivial. Turning off your PC for a day isn't going to give a huge difference in your light bill. [/QUOTE]

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