SpeedStep Problem T7300

[rooomka]

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

[Maliha Community Moderator]

Hi rooomka,

A quick search on forum came up with this result:- http://forums.lenovo.com/t5/X-Series-Tablet-ThinkPad-Laptops/Buyer-Beware-Your-power-adapter-may-be-...

Hope it helps.

[rooomka]

Hi,

sorry for not answering, but I still have the same problem. Even buying a new 90W power adapter didn't resolve it.

Does anybody else have the same problem? Any solutions?

Greets

Rooomka

[lead_org Microsoft MVP Contributor]

what OS are you using? also have you tried to update the bios recently?

[rooomka]

Hi,

as I said in the very first post the problem occured under Windows XP x86 and under Windows 7 x64. Now I am using only Win7.

I have the latest version of BIOS. Today I tried reinstalling BIOS, but it didn't help.

I although installed a fresh version of Win7 with the newest drivers and it had the same problems

Am I realy alone with this issue?

[chroma]

No you are not. I have exactly the same issue on a T61 with T7300. The only way to solve it is to use a 90W adapter.

[rooomka · Accepted solution]

Hello again,

I've got it, it was an overheating problem. When the processor was under load it got very hot and the speed was throttled.

I just vacuumed the cooling slot and now is everything fine again!

Now I am in love with my ThinkPad again!

Thanks for taking time!