Welcome to our peer-to-peer forums, where owners help owners. Need help now? Visit eSupport here.

English Community

ThinkPad NotebooksThinkPad: T400 / T500 and newer T series Laptops
All Forum Topics
Options

10 Posts

06-12-2011

Copenhagen, Denmark

61 Signins

135 Page Views

  • Posts: 10
  • Registered: ‎06-12-2011
  • Location: Copenhagen, Denmark
  • Views: 135
  • Message 1061 of 1217

Re: T420s Fan noise Issue

2012-04-25, 11:31 AM

Ehrm - this is a bit awkward to admit: I just noticed that I didn't completely deactivate TPFanControl after my initial testing (which I thought I did) - so last few days it actually continued to run with TPFanControl after I restarted Windows. :-(

 

Now that I turned it off again, fan runs at 3.5K most of the times (@48-60°C) and at 2K (<48°C) sometimes - still much better than the almost constant 4K before - but not as quiet as I praised it yesterday. :smileyfrustrated:

 

Sorry!

Reply
Options

62 Posts

06-08-2011

USA

74 Signins

339 Page Views

  • Posts: 62
  • Registered: ‎06-08-2011
  • Location: USA
  • Views: 339
  • Message 1062 of 1217

Re: T420s Fan noise Issue

2012-04-25, 18:18 PM

That might be a slight imporvement. I don't recall the fan on my T420s ever running at 3.5k.

 

It runs at 4k (@48-60°C) and at 2K (<48°C). The problem is that when using the lenovo dock, the NVS GPU is always on at 100% and the laptop isn't capable of reaching less than 48°C even on idle. However, off the dock on battery power the temperature is much lower. I've tried all the power manager and bios settings but no luck.

 

Lenovo is ignoring this situation. I slight bios change would solve this problem. 

Reply
Options

107 Posts

06-28-2011

Italia

2191 Signins

3793 Page Views

  • Posts: 107
  • Registered: ‎06-28-2011
  • Location: Italia
  • Views: 3793
  • Message 1063 of 1217

Re: T420s Fan noise Issue

2012-04-26, 8:42 AM

I still wonder why they don't care changing the thresholds a bit (and maybe reintroducing the 3000 RPM behaviour). It would take five minutes of their time, it won't destroy any hardware, and we will be happier (not completely satisfied such as if they solve the fan stuck issue, but I lost hope for that).

Reply
Options

2445 Posts

03-09-2012

Canada

5597 Signins

25336 Page Views

  • Posts: 2445
  • Registered: ‎03-09-2012
  • Location: Canada
  • Views: 25336
  • Message 1064 of 1217

Re: T420s Fan noise Issue

2012-04-26, 22:38 PM

I was thinking of all you guys when I read the following. Following this and going from Active to Passive state may help you. Its a toggle so there is nothing to lose. However, if you fans are faulty that should be the first course of action.

 

Windows 7 tip of the week: Configure the system cooling policy

You've probably tweaked the power settings on your Windows 7 computer; you might have even created a custom power plan. But have you delved into the advanced settings? You can specify how Windows should respond to heat conditions when your system has active cooling features. To do this, perform the following steps:

  1. Click Start | Control Panel
  2. Click the Power Options applet
  3. In the right pane, for the power plan that you have selected to use, click Change plan settings
  4. Click Change advanced power settings
  5. In the Advanced settings dialog box, scroll down and expand Processor power management
  6. Expand System cooling policy
  7. Here you'll see the current setting (either Active or Passive) - click the setting to change it
  8. Click OK

The Active setting increases fan speed before slowing down the processor. The Passive setting slows the processor before increasing fan speed.

T520 Model 4239 Intel(R) Core(TM) i7-2860QMbr>; Nvidia NVS 4200M Win 10 64bit
Z70-80 I7 - 5500U 16GB GB - 1TB HD Win 10 64bit FHD 17.3", G840 w/2GB

Reply
Options

17 Posts

01-18-2012

United States of America

24 Signins

211 Page Views

  • Posts: 17
  • Registered: ‎01-18-2012
  • Location: United States of America
  • Views: 211
  • Message 1065 of 1217

Re: T420s Fan noise Issue

2012-04-27, 0:16 AM

wrote:

I was thinking of all you guys when I read the following. Following this and going from Active to Passive state may help you. Its a toggle so there is nothing to lose. However, if you fans are faulty that should be the first course of action.

 

Windows 7 tip of the week: Configure the system cooling policy

You've probably tweaked the power settings on your Windows 7 computer; you might have even created a custom power plan. But have you delved into the advanced settings? You can specify how Windows should respond to heat conditions when your system has active cooling features. To do this, perform the following steps:

  1. Click Start | Control Panel
  2. Click the Power Options applet
  3. In the right pane, for the power plan that you have selected to use, click Change plan settings
  4. Click Change advanced power settings
  5. In the Advanced settings dialog box, scroll down and expand Processor power management
  6. Expand System cooling policy
  7. Here you'll see the current setting (either Active or Passive) - click the setting to change it
  8. Click OK

The Active setting increases fan speed before slowing down the processor. The Passive setting slows the processor before increasing fan speed.


Thank you for your kindness. But without luck. Actually this setting is equal to that the Lenovo Power Management did.

Reply
Options

28 Posts

01-18-2012

Texas-USA

39 Signins

254 Page Views

  • Posts: 28
  • Registered: ‎01-18-2012
  • Location: Texas-USA
  • Views: 254
  • Message 1066 of 1217

Re: T420s Fan noise Issue

2012-04-27, 3:15 AM

Mycroft,

 

Is your fan still running a little more quiet than the original?  I know there is still a BIOS problem, but I only have 45 days left on my warranty and will do anything to get the fan to be quieter. Including sending it out for repair that may only slow it down a bit.  The sucker runs nonstop while charging and erratically on battery.

 

By the way, our last BIOS update (1.31) was around 12/21/2011 just before JamieZ left the group.  And nothing from Lenovo except for being scolded about forum rules on 3/27. 

 

 

Reply
Options

5 Posts

04-25-2012

Ghana

24 Signins

71 Page Views

  • Posts: 5
  • Registered: ‎04-25-2012
  • Location: Ghana
  • Views: 71
  • Message 1067 of 1217

Re: T420s Fan noise Issue

2012-04-30, 21:30 PM

I just got a T420s 4174P4G with BIOS version 1.31 and EC version 1.12...My fan runs really quiet...a bit too quiet if you ask me because it really heats up when I'm playing games.

 

My problem is that the games start off really smooth then when the temperature goes too high(about 5-10 minutes into the game),the CPU starts throttling and the lag is unbearable,the machine has never powered off due to this though..HWinfo shows CPU temperatures as high as 97 degrees celcius and my base/idle temperature is around 50-60....GPU temperature is around 81-86 degrees

 

System is fairly new,I can't imagine it being dust.....any suggestions or ideas....oh yeah my fan speed is usually 4633 RPM too...should be the highest speed but still can't keep the temperature down

 

Should I downgrade my BIOS and see if I get better temperature values or is this just another one of the T420s' flaws?

Reply
Options

2483 Posts

04-08-2011

United States of America

5471 Signins

46460 Page Views

  • Posts: 2483
  • Registered: ‎04-08-2011
  • Location: United States of America
  • Views: 46460
  • Message 1068 of 1217

Re: T420s Fan noise Issue

2012-04-30, 22:53 PM

wrote:

I just got a T420s 4174P4G with BIOS version 1.31 and EC version 1.12...My fan runs really quiet...a bit too quiet if you ask me because it really heats up when I'm playing games.

 

My problem is that the games start off really smooth then when the temperature goes too high(about 5-10 minutes into the game),the CPU starts throttling and the lag is unbearable,the machine has never powered off due to this though..HWinfo shows CPU temperatures as high as 97 degrees celcius and my base/idle temperature is around 50-60....GPU temperature is around 81-86 degrees

 

System is fairly new,I can't imagine it being dust.....any suggestions or ideas....oh yeah my fan speed is usually 4633 RPM too...should be the highest speed but still can't keep the temperature down

 

Should I downgrade my BIOS and see if I get better temperature values or is this just another one of the T420s' flaws?


Why not just set your machine in Turbo Boost + mode right before you start gaming?  This will put the fan at max speed and therefore max cooling.  If that doesn't help, then I guess you need to ask the Lenovo engineers why ThinkPad products can't be used for any modern games.

Reply
Options

5 Posts

04-25-2012

Ghana

24 Signins

71 Page Views

  • Posts: 5
  • Registered: ‎04-25-2012
  • Location: Ghana
  • Views: 71
  • Message 1069 of 1217

Re: T420s Fan noise Issue

2012-04-30, 23:30 PM

I always turn turbo boost plus on...I feel the rush of cold air before the games start but still heats up really fast...I suspect bad EC values because immediately after I stop gaming the vent goes from burning hot to ice cold in about 30 seconds and the temperature values drop by 5s and 10s in HWinfo

 

I also think 50-60 is too high for start up and idle cpu temperature...What should I do Lenovo?

Reply
Options

163 Posts

07-02-2011

USA

950 Signins

2954 Page Views

  • Posts: 163
  • Registered: ‎07-02-2011
  • Location: USA
  • Views: 2954
  • Message 1070 of 1217

Re: T420s Fan noise Issue

2012-05-01, 0:29 AM

salisadecade: While the game is playing, check the fan speed. Is it running at 4000RPM? If so, the fan is already cooling the laptop as much as possible.

 

I think you're running against the fact that, at 100% CPU usage, the cooling system simply isn't capable of removing heat faster than the CPU can generate it. I accept this as an inherent limitation to cramming a high-performance CPU into a thin form factor. The cooling system can handle normal, intermittent loads just fine, but the cooling system isn't adequate for sustained heavy loads.

 

My issue with the fan is that the BIOS sometimes chooses too fast fan speeds for the situation (such as running the fan on maximum RPM for 30 minutes while the CPU temperature is under 40C the whole time).

Reply
Forum Home

Community Guidelines

Please review our Guidelines before posting.

Learn More

Check out current deals!

Go Shop
X

Save

X

Delete

X

No, I don’t want to share ideas Yes, I agree to these terms