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I am using Ubuntu 12.04 LTS and I would like to know if I can underclock my CPU when my computer is idle, and overclock when performance is needed. Is there some sort of software I can install and use? Or is is a hardware based thing? Any suggestions? Thanks!
P.S.
Here are my CPU specs (just in case):
Intel® Atom™ CPU N270 @ 1.60GHz × 2
This seems to be a common feature on laptops now. My Lenovo X220 for example adjusts the CPU speed based on the power source. It also has a "boost" feature that 'overclocks' the CPU (but not outside its thermal design limits) in some circumstances. – Piku – 2013-06-23T08:26:40.097
How can I tell if SpeedStep is enabled and how can I enable it if not? – user151324 – 2013-06-23T14:05:20.310
I see this:
The governor "ondemand" may decide which speed to use within this range.
Does that mean SpeedStep is enabled? – user151324 – 2013-06-23T14:07:42.633Yes. Should also be showing the low/high freq and how many steps in between along with how much time the processor has spent at each frequency. Can add a "as suggest ran cpufreq-info and this was the result" to your question. – Brian – 2013-06-23T19:40:42.223