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Posts: 11
Registered: ‎04-26-2009
Location: germany
0 Kudos
Accepted Solution

SpeedStep Problem T7300


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 …





Posts: 3,220
Registered: ‎07-31-2008
Location: Pakistan
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Re: SpeedStep Problem T7300

Hi rooomka,

A quick search on forum came up with this result:-

Hope it helps.


Maliha (I don't work for lenovo)
ThinkPads:- T400[Win 7], T60[Win 7], IBM 240[Win XP]

IdeaPad: U350

Apple:- Macbook Air [Snow Leopard]
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Posts: 11
Registered: ‎04-26-2009
Location: germany
0 Kudos

Re: SpeedStep Problem T7300



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?




Posts: 20,913
Topics: 128
Kudos: 1,261
Solutions: 1,344
Registered: ‎12-19-2008
Location: Australia, Melbourne
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Re: SpeedStep Problem T7300

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


Jin Li

May this year, be the year of 'DO'!

I am a volunteer, and not a paid staff of Lenovo or Microsoft
Posts: 11
Registered: ‎04-26-2009
Location: germany
0 Kudos

Re: SpeedStep Problem T7300



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?

Fanfold Paper
Posts: 1
Registered: ‎07-22-2010
Location: Ireland
0 Kudos

Re: SpeedStep Problem T7300

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.

Posts: 11
Registered: ‎04-26-2009
Location: germany
0 Kudos

Re: SpeedStep Problem T7300

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!