CPU not running at maximum frequency

Has anyone else had the issue of their cpu not running at full speed? I've checked in power settings and it should be set to 100%, but it still runs at maybe 80-96%. Occasionally it will actually get stuck at less than half speed, which can only be solved by a reboot. No heat issues that would cause it to throttle. It's a Core 2 Duo 2.8 ghz, t9600.
build 9879

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That processor has Enhanced Intel SpeedStep  technology :)

Might search that or maybe just read at Wikipedia.. http://en.wikipedia.org/wiki/SpeedStep

Unless its under maximum load it wont show as full speed.

My laptop i3 processor is 2.3Ghz but if  I look while at idle in TaskManger it will show 0.80Ghz. Ramps up to higher speeds depending on the workload demand.  Not unusual to see it anywhere between that .8Ghz and 2.3Ghz.      

Put the power plan on Performance and it will maybe show 1.8 at idle up to 2.3 under loads.

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Thanks Mike,
I figured it'd be related to speedstep but I had the performance plan set to 100% minimum on AC. I think it used to stay as it was set under Vista. Maybe the control has just evolved further in the preview.
Occasionally when it's set to power saver it reports it's doing something like 25ghz or something crazy. Perhaps the strange behavior could be a sensor on the way out?

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Last updated February 2, 2021 Views 2,890 Applies to: