Hello together,
I have a two years old ThinkPad X61 with an Intel Core2 T7300 Processor which has a maximal Frequency of 2GHz.
My ThinkVantage Power Manager has following settings:
- · on battery the maximal Frequency is set to “low” which is about 800 Mhz.
- · with a power supply the maximal Frequency is set to “highest” which is 2000 Mhz.
On the battery is everything ok.
But when I connect the power supply the CPU accelerates at first 1 or 2 minutes to 2 GHz as it should be, but then goes down to 800MHz. If I fully load the CPU (e.g 5 youtube videos) it stays at 800MHz and is 100% loaded.
I have tried some settings and options in the Power Manager, but it didn’t change anything. The only thing I could finger out is: if I reactivate my profile in the Power manager it accelerates the CPU to 2GHz, but again only for 1-2 minutes. Then the speed goes down to about 800 MHz even if the CPU is fully loaded at all this time.
I have done all windows updates and ThinkVantage updates. I have Windows XP and Windows 7 and the behavior is the same on both OSs.
The behavior of the CPU is very strange, so I cannot figure out if it is software or a hardware problem.
Maybe you could have some ideas …
Greets
Roman
