RE: Vista Speedset support
SpeedStep technology requires using more than just the operating system.
You also need a compliant BIOS and chipset and chipset drivers. Since I
don't know whether your system includes those, and possibly other, compliant
components, I can only suggest you determine whether your system is fully
SpeedStep enabled. The utility ZPU-Z (free download) is also useful for
seeing what your system is doing. Just some thoughts, as others may have
"B Flow" wrote:
> Since moving a variety of Intel SpeedStep enabled PCs from XP to Vista, it
> ~appears~ that SpeedStep is not working in that System Properties ALLWAYS
> shows the rated and current speed as the same (unlike under XP where it would
> show the delta when system is idle).
> Under Power Management I've tried changing the Processor Power State Min
> from the 5% default to 0%, 10%, etc with no change. Tried Intel's CPU ID
> utility and it always shows the posted and "current" speed as the max for the
> given CPU.
> Is Speedstep working at all, and if so, why is the lower speed not being
> reported when system is idle?