X41, Pentium M 1.5Ghz

[mehmetmunur]

I was checking on the CPU speed just a second ago, and I realized that it does all the way down to 239Mhz, but is usually around ~589 Mhz when at its lowest multiplier, but I realize that Windows does not always correctly identify the speed.

Anybody have similar experiences?

 

[PeeluckyDuckee]

Intel Speedstep only allows for two speeds, the default and the lower 600mhz. The software may be reading it incorrectly.

 

[fbrdphreak]

Originally posted by: PeeluckyDuckee
Intel Speedstep only allows for two speeds, the default and the lower 600mhz. The software may be reading it incorrectly.

Unfortunately you both are incorrect.

Speedstep varies the voltage and multipliers among several different values. The lowest multiplier used is 6x. For a 100MHz (400MHz effective) FSB, that equates to a 600MHz minimum clock speed. For a 133MHz (533MHz effective, i.e. Sonoma) FSB, that equates to an 800MHz minimum clock.

Windows System Control Panel applet incorrectly reports clock speeds, use a real applet like Notebook Hardware Control or MobileMeter.