Chris May <ChrisM@shangri-la.com> wrote in
news:f3lqi21sqjs6eikpplbq0bko27h4si6unl@4ax.com:

> On Wed, 11 Oct 2006 14:45:17 -0400, Chris May pondered exceedingly,
> then took quill in hand and carefully composed...
>
>| I recently overclocked a Pentium D 945 from 3.4GHz to 3.6GHz by
>| increasing CPU external frequency from 200 to 212 MHz. Although the
>| CPU speed now shows as 3.6GHz on the post screen and according to
>| Sisoft Sandra after XP has started, the general tab of System
>| Properties shows the CPU designation correctly but now indicates
>| 2.52GHz as the operating speed as follows:
>|
>| Computer:
>| Intel(R)
>| Pentium(R) D CPU 3.40GHz
>| 2.52GHz, 1.00 GB of RAM
>|
>| Another Pentium D 945 overclocked the same amount in another
>| computer correctly shows 3.6GHz as the operating speed.
>
> Oops! Ignore. I found the "problem." Intel SpeedStep is turned on
> in the computer showing the lower operating speed, but not in the
> computer that doesn't. When I turned off SpeedStep and checked,
> readings were correct.
>
> It's just the system doing exactly what it's supposed to do. :)
>
> ChrisM
>

And I'd guess that your system idle process average CPU usage has
rocketed from 97% to at least 98% too!