Dell C610 laptop & cpu speed displayed power scheme

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I have a Dell C610 laptop that I keep up to date with Windows XP updates.
Recently, I've noticed that when I right-click on My Computer, while at an
idle desktop,
and look at the Properties, the current speed seems to always be 1.20 Ghz.
(The display shoiws the model as 1200Hhz, with a 2nd line should be the
actual speed).
The fan does not turn on, which leads me to believe it is not really running
at 1.20 Ghz,
since the Task Manager graph only shows 1% usage...

The Power Properties settings are for "portable/laptop",
which should be "Adaptive" for both AC and battery,
and would usually show 789Mhz...

Wondering if anyone else has noticed this change,
or if something in XP has recently changed the way the Power Meter is

On a Windows XP-based computer, control of processor performance states is
inherent. Four modes of operation, known as processor policies, are used to
control processor performance states. The processor policies used by Windows
XP are:

High        Always runs at the highest performance state
Adaptive  Performance state chosen based on CPU demand
Degrade   Starts at the lowest performance state, and then uses linear
                 performance reduction (stop clock throttling) as battery
Constant  Always runs at the lowest performance state

These processor policies are directly tied to the power schemes available in
the Power Options tool in Control Panel. The following power schemes are
provided with Windows XP. Note that additional power schemes may be provided
by your system vendor.

Processor Policy

Power Scheme        AC Power    DC Power

Home/Office Desk    High           Adaptive
Portable/Laptop        Adaptive    Adaptive
Presentation              Adaptive    Degrade
Always On               High            High
Minimal Power         Adaptive    Adaptive
Max Battery             Adaptive    Degrade

Re: Dell C610 laptop & cpu speed displayed power scheme

The ability to cut CPU power (Speedstep, PowerNow, etc.) is sometimes
enabled/disabled in the BIOS. Perhaps yours is disabled, thus always
running at amx power.

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