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3538 Posts

07-12-2010

Malaysia

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Re: X220 cpu throttling problem

2011-05-26, 6:18 AM
@All,

I've received massive amount of PM on this issue. Thanks guys for all the information which you have provided. Case has been logged to engineering using atommicminded's machine info and contact info.

Will keep everyone posted on the progress.

//JameZ
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46 Posts

05-21-2011

UK

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Re: X220 cpu throttling problem

2011-05-26, 9:22 AM
Jamez and others, Oh my gosh. Some lenovo "front office" lady (her term) called me just now to say the throttling issue I'd identified was 'normal' according to their techs. Needless to say, I wasn't very happy. I suggest anyone with an i7 calls lenovo tech support and lodges this perm throttling issue with them!

Petrov.
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4 Posts

05-26-2011

Ocean City, MD

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Re: X220 cpu throttling problem

2011-05-26, 20:35 PM

I have the same problem.  If you look at CPU-Z, only if the "CORE VID" is over 1.000 V does the throttling temporarily stop and full CPU performance is shown, if only an instant.

 

My guess is that the CPU power management in the BIOS doesn't adequately give enough voltage to the integrated GPU, which in turn, throttles the CPU to 5%. (800 Mhz)

 

A BIOS update should fix this, so that the CORE VID can be over 1.000V at all times.

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165 Posts

09-16-2008

United States of America

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Re: X220 cpu throttling problem

2011-05-26, 21:56 PM

Hello,

 

I am trying to recreate this issue and so far I have not had much luck.  I am using a X220 with i7-2620M processor.  I have power manager set to High performance using the slider. 

 

I am currently running:

furmark at 1280x720 in burn in mode

HWiNFO32

IntelBurnTest v2.51 - standard stress level with 1024MB RAM

 

HWinfo reports the following after running for 15 minutes

 

GPU - 900

CPU

Core0 - 2690 - 27.00x ratio

Core1 - 2690 - 27.00x ratio

 

My question to the forum is:

 

What else do I need to do to see this issue on my machine?

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55 Posts

05-24-2011

New York City

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Re: X220 cpu throttling problem

2011-05-26, 22:11 PM

Well, you can go to the owners tread and read about a program called occt that causes the problem. You can also try to run prime95 for the cpu stress test together with furmark. But there on the owners thread there are many different ways people are replicating the throttling issue. Also, in this thread petrov's suggestion of running 3DMark06 back to back 4-5 times will get the throttling also.

 

One thing to note, people are reporting the throttling with the ac adapter plugged. Did you have your computer on ac power or on battery alone? On battery, many have said that there is no throttling. Also, some people are stating that with the 90W ac power adapter that there is no throttling. Nothing is 100% confirmed yet since many people are getting different results.

 

Hope this helps.

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78 Posts

05-15-2011

USA

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Re: X220 cpu throttling problem

2011-05-26, 22:51 PM

Soap,

 

Well, for starters, though I'm not certain it matters, the Power Profile (under advanced) is set to Maximum Performance.  After that, following these simple steps recreates the behavior each and every time:

 

http://digitalchumps.com/featured-electronics/132-features/7455-lenovo-x220-i7-2620m-cpugpu-throttling-the-full-details-and-breakdown.html

 

Please also note that you must have the 65W AC adapter attached for the behavior to occur -- a 90W UltraSlim does not work.  Strangely (and troublingly), when the 90W is attached, the behavior is absent, but the touchpad is unusably jumpy.  When the testing is initiated, the touchpad behavior returns to normal while the 90W is attached.  Something really screwy is afoot with the power draw of this laptop!

 

Also, real-world tests with games such as Civilization V never fail to reproduce the issue.

 

I hope this helps.

Owner/Technology Specialist
Triple-S Computers - http://www.TripleSComputers.com
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165 Posts

09-16-2008

United States of America

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Re: X220 cpu throttling problem

2011-05-26, 23:35 PM
I know that I was using a 65W AC Adapter and had it connected at both ends. I will test using the Advanced mode in Power Manager. I did try adding Prime95 with 4 thread test and it did not seem to make any difference. I will try Prime95 alone to make sure that it is working.
Also, I am using Windows 7 Professional 64 bit with 4GB of RAM. 320GB 7200RPM Hard Drive.

I have BIOS 1.15 that I installed via Windows.

I will test more tomorrow, but any suggestions that the forum has are helpful.
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1 Posts

05-26-2011

Philadelphia

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  • Message 68 of 727

Re: X220 cpu throttling problem

2011-05-26, 23:39 PM

 


wrote:
I know that I was using a 65W AC Adapter and had it connected at both ends. I will test using the Advanced mode in Power Manager. I did try adding Prime95 with 4 thread test and it did not seem to make any difference. I will try Prime95 alone to make sure that it is working.
Also, I am using Windows 7 Professional 64 bit with 4GB of RAM. 320GB 7200RPM Hard Drive.

I have BIOS 1.15 that I installed via Windows.

I will test more tomorrow, but any suggestions that the forum has are helpful.

 

It may be important that the x220 that you are using does not have the ssd option. It seems that most so far have had the ssd.

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56 Posts

05-12-2011

USA

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  • Message 69 of 727

Re: X220 cpu throttling problem

2011-05-27, 0:10 AM

wrote:
I know that I was using a 65W AC Adapter and had it connected at both ends. I will test using the Advanced mode in Power Manager. I did try adding Prime95 with 4 thread test and it did not seem to make any difference. I will try Prime95 alone to make sure that it is working.
Also, I am using Windows 7 Professional 64 bit with 4GB of RAM. 320GB 7200RPM Hard Drive.

I have BIOS 1.15 that I installed via Windows.

I will test more tomorrow, but any suggestions that the forum has are helpful.

I was not able to reproduce the problem with CPU stress alone.  I had to combine it with something that stressed them to their MAX.  At the limits of the total thermal dissapation of the cpu/gpu comibined.

 

I have the an Intel 320 SSD installed in my machine, too.

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55 Posts

05-24-2011

New York City

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Re: X220 cpu throttling problem

2011-05-27, 0:12 AM

wrote:

Soap,

 

Well, for starters, though I'm not certain it matters, the Power Profile (under advanced) is set to Maximum Performance.  After that, following these simple steps recreates the behavior each and every time:

 

http://digitalchumps.com/featured-electronics/132-features/7455-lenovo-x220-i7-2620m-cpugpu-throttling-the-full-details-and-breakdown.html

 

Please also note that you must have the 65W AC adapter attached for the behavior to occur -- a 90W UltraSlim does not work.  Strangely (and troublingly), when the 90W is attached, the behavior is absent, but the touchpad is unusably jumpy.  When the testing is initiated, the touchpad behavior returns to normal while the 90W is attached.  Something really screwy is afoot with the power draw of this laptop!

 

Also, real-world tests with games such as Civilization V never fail to reproduce the issue.

 

I hope this helps.



Does the throttling occurs when playing Civ 5, but while on the 65W adapter? or  does it also occurs on the while plugged to the 90W?

 

Also, if you play without the adapter? Does the throttling occurs at this point?

 

Just want to make sure it does not. Just to confirm. Thanks.

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