Yes and no

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Subject: Yes and no
Name: ludicrous
Date: 1/7/2001 4:34:42 PM (GMT-7)
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In Reply to: Can the cpu speed be changed dynamically? posted by Kurran

yes, some CPUs will permit on-the-fly, continuous speed changes, i.e. PowerNow! in the AMD K6-X+ processors.

In your case, you're dealing with the Suspend-on-halt (HLT) command, recognized by most modern microprocessors including Intel CPUs, in which unused CPU portions can be dynamically put into suspend mode.

Try some programming resource sites, perhaps

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