Thread: Overclocked CPU idle time and again high

Initiated by the fact that I wanted to find out why constantly on my Thinkpad Edge 11 runs the CPU fan, I noticed that the CPU is overclocked highly persistent. This is a Core i3380UM with Intel IGP and Windows 7 Professional. The behavior is independent of the energy savings plan and is as follows: In the lowest level, the CPU runs at 650 MHz (5x multiplier). Since it remains for a second or two and then clocked at 930 MHz (7x). There they remain for a long time, sometimes for five seconds, sometimes for five minutes, to then again for two seconds to clock at 650 MHz .

Hmm, what energy-saving "step" because you are using? There are high-performance, balance and energy saving, if I remember correctly.

Maybe something is running in the background, which causes a load, the processor persuading hochzutakten over again? If (display-enabled hooks in processes of all users) of Task Manager Processes tab reveals nothing, then please look under Performance tab to view View hook in kernel processes. Not that there is driving some paranoid virus scanners in the background mischief, an updater for XYZ, a clean up for anything blablaba.

But may I ask, what caused you to 1.65 GB in idle RAM usage? I'm not even at 1 GB with Win 7 x64 after the boat! Not that there is something open in the background, causing hidden load, eg a minimal (or not have become headless) Firefox process with a Flash animation that regularly wakes the CPU, because the GPU needs some attention or the like. I'm here at least one grade A6 Notebook Llano here for installation. And that remains even with Windows 7 x64 permanently in the lowest p-state when no load is required.

The Linux Live-DVD I can save myself, because I use the device additionally with Linux (Fedora 13 with kernel 2.6.35) the district. And there the Downclocking works properly, the CPU stays most of the time clocked at 650 MHz and only rarely high.

This is strange. I have a similar behavior with my Edge11 with AMD CPU. On Windows, the CPU overclocked highly significantly more often than on Linux. Keeping up with the clock but I can not quite remember. Maybe it's the Lenovo software.