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2029 Posts

12-02-2007

Australia

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Re: X220 cpu throttling problem

2011-07-18, 7:15 AM

The engineering staff at Lenovo are the only ones who are in a position to look at the totality of the issue in terms of the X220 system environment.

 

As end users we only have 65W and 90W power supplies available, but cannot tell if the problem is caused by a small miss on the energy available from a 65W power supply or large miss, and can only tell that it does not occur with a 90W supply.

 

If it is a small miss there may well be a completely different set of possibe options to address it, than if it is a more significant miss.

 

Random speculations on what Lenovo MUST do in terms of a solution are simply not helpful to anyone, IMO. :smileysurprised:


Cheers,

 

Bill.

------------------------------
I don't work for Lenovo
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7 Posts

07-01-2011

Germany

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Re: X220 cpu throttling problem

2011-07-19, 12:52 PM

Concerning the 90W power supply: is each 90W power supply by Lenovo useable with the X220? I mean can they all plugged in into the X220 or are some of the plugs formed differently such that they don't fit.

 

 

I am still thinking about which ultraportable is best for me at the moment and I have read that the Sony Vaio SA and Z21 are not that great either (fan issues as well ...). So I am reconsidering buying a X220. Anyone really happy using it here (heavily with coding and a lot of computation intensive stuff)?

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769 Posts

08-07-2010

United States of America

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Re: X220 cpu throttling problem

2011-07-19, 14:18 PM

someonelse wrote:
I am still thinking about which ultraportable is best for me at the moment and I have read that the Sony Vaio SA and Z21 are not that great either (fan issues as well ...). So I am reconsidering buying a X220. Anyone really happy using it here (heavily with coding and a lot of computation intensive stuff)?

I'm really happy with my X220. Excellent keyboard. Super IPS display. Amazing speed for such a small and light package. Great features. First class engineering throughout. CPU throttling isn't a problem even in CPU intensive tasks: When I max out all 4 threads on 2 cores in video rendering, the i7-2620M stays in full 3.2 GHz Turbo Boost indefinitely with only occasional brief drops to 3.0-3.1 GHz. The X220 may well be the best of the many ThinkPads I've owned.

John   [tips]   ThinkPad T470p:
Win8.1Pro64 | i7-7820HQ | 32GB | 512GB SSD | WQHD | AC | BT | Cam | FR
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575 Posts

03-20-2011

Canada

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Re: X220 cpu throttling problem

2011-07-19, 14:34 PM

JNavas wrote

I'm really happy with my X220. Excellent keyboard. Super IPS display. Amazing speed for such a small and light package. Great features. First class engineering throughout. CPU throttling isn't a problem even in CPU intensive tasks: When I max out all 4 threads on 2 cores in video rendering, the i7-2620M stays in full 3.2 GHz Turbo Boost indefinitely with only occasional brief drops to 3.0-3.1 GHz. The X220 may well be the best of the many ThinkPads I've owned.



Me too. It took me a while to understand the throttling problem, and actually reproduce it on my machine, and it only takes CPU+GPU stress to manifest itself.

 

The thing is scorching fast in everything I've tossed at it. I don't play games on it, I've got a PS3 for that.

 

I would like for Lenovo to fix this, or at least offer an exchange of the power adapter to 90W for those who need it.

---------------------
| X220 i7-2620M | 12.5" HD IPS | Intel 180GB SSD | Crucial 480GB mSATA SSD | 8GB DDR3 | Intel 7260 AC |
| X260 i7-6600U | 12.5" FHD IPS | Samsung 860Pro 512GB SSD | 16GB DDR4 | Intel 8260 AC |
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25 Posts

07-20-2011

Canada

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Re: X220 cpu throttling problem

2011-07-20, 5:50 AM

I've only read some of the more recent pages and a lot of folks believe the 65 watt adapter might be the root of the problem.  Would anyone on this forum have a kill-a-watt to test how much power is being drawn during max CPU+GPU?

 

For example:

 

Idle ##W 

Power usage measured by Kill-a-watt (battery is fully charged, max brightness, wifi on)
Playing 720p mkv with decoding, CPU 22%, ##W
Internet surfing ##W

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18 Posts

06-19-2011

Singapore

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Re: X220 cpu throttling problem

2011-07-20, 7:42 AM
the Bios update is not release yet ???
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2029 Posts

12-02-2007

Australia

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Re: X220 cpu throttling problem

2011-07-20, 8:50 AM

 

Would anyone on this forum have a kill-a-watt to test how much power is being drawn during max CPU+GPU?

 


Given that there is also a battery in the laptop, and by design Intel CPUs for mobile applications will SpeedStep throttle when the battery is removed from the system, it is not realistically possible to definitively determine the internal power conditions/budget by simply looking at power consumed from the external power adapter, whether measured on the input or output sides of the adapter.

 

Cheers,

 

Bill

------------------------------
I don't work for Lenovo
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3538 Posts

07-12-2010

Malaysia

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Re: X220 cpu throttling problem

2011-07-20, 9:03 AM

Hi All,

 

New BIOS Fix 1.19.

 

BIOS here

 

Text here

 

--------------------------------------------------------------------------------
CHANGES IN THIS RELEASE
  Version 1.19

[Important updates]
  Nothing.

[New functions or enhancements]
- Improvement for the issue that CPU is unexpectedly fixed to low frequency mode.
- Improved fan control method.

[Problem fixes]
  Nothing  


--------------------------------------------------------------------------------





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177 Posts

12-06-2010

United States

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Re: X220 cpu throttling problem

2011-07-20, 17:07 PM

Time to try it out.

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7251 Posts

10-29-2009

United States of America

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Re: X220 cpu throttling problem

2011-07-20, 17:41 PM

Unless you are one of the very few people who were affected by the perma-throttle behavior, where you get stuck at a low CPU clock frequency permanently (until shutdown/reboot) then BIOS 1.19 won't do a thing for you.  Please read Ken's post on page 46.

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