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