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Modern CPUs vary their speed. So this might be normal.
What exact version of PerformanceTest are you using?
What CPU do you have?
What speed do you think it is running at?
What was reported?
What O/S do you have?
I would like to mention that since I have Speedstep and EIST disabled in BIOS, and the fact that, of the various applications I have used, only Performance Test exhibits this behavior, I believe that the processor is never in a "low power state". In fact, in the screenshot I linked to, Performance Test was started after Everest and CPU-Z were running along with Firefox.
I have also noticed that every time I open and close and then reopen Performance Test, I get a different CPU frequency. In addition, Performance Test always reports the Bus Speed as 333MHz, when it is actually set to 450MHz.
I've ran this test on fresh installs on Windows 7 (x64) and XP SP3 (x86). I've scored about 300-400 higher using Windows 7.
For some reason, the x86 version is reporting my CPU at 3.2xxx GHz and not the 3.6Ghz it is actualy running at. CPUz, and every other hardware program, sees it as 3.6Ghz, including the x64 version of Passmark. Likewise, my 2D preformance in Passmark has taken a huge hit when run under the x86 version. There have been no hardware changes between OS installs, everything is the exact same. Well, except the results.
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