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2445 Posts

03-09-2012

Canada

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Re: T430 Fan speed

2012-08-09, 13:11 PM

I am monitoring my CPU temp with CoreTemp and notice it can hit 89C even while doing a AV scan with MSE with load less than 25%. The fan does speed up but I believe it should ramp up more at those temperatures. I have never seen high CPU loads >50% in my activities but question the cooling implementation here. I am at the current BIOS 1.37 which did nothing for the fan stepping.

 

There should be a Utility to run and TEST the fan cycle and step speeds are actually working. The supplied diagnostics for ThinkPad is useless. I don't like the CPU getting that hot with such low load on the CPU.

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

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73 Posts

03-08-2008

Slovakia

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Re: T430 - FAN ISSUE --> NOISY!

2012-08-09, 13:14 PM

Hi HP79,

 

I think that both these FANs could run at same nosie level if system is able to properly controll both of them. In my case there was problem that my system was not able to work correctly with 3 wires FANs, but I'm certainly sure that also this 3 wires FAN could run correctly if proper controll mechanism is implemented and if system is able to recognize 3 or 4 wires FAN and then use proper controll method - this is my opinion. After few angry days I finally decided to give to Lenovo last chance and managed replacement of my laptop for T430s with i7 and integrated intel VGA, so far all seems ok also FAN regulation seems that is better like on T420s. I was interested which type of FAN is inside so I have removed keyboard and there is AVC 4 wires fan, so I hope that there will be not same issue as with my old T420s where lenovo was unable to supply service with 4 wires fan, in case of FAN problem.

 

If you didnt noticed any noise difference yet then I think that you are OK as, in case of 3 wires fan problem you will be definitelly able to notice it as fan is running nearly all time on 4k. As I know I didnt seen any FAN doubts on X230 over here so you could be calm.

 

In case of some troubles drop a post here to keep all of us informed.

 

Thanks,

 

David

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30 Posts

07-21-2012

UK

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Re: T430 - FAN ISSUE --> NOISY!

2012-08-09, 13:41 PM

Just another thought: my computer has an i7 processor.   I just read that the cooling issues are more intense than with an i5.  Would this be the reason the fan is so active?  (It still doesn't excuse the noise problem though!)

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73 Posts

03-08-2008

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Re: T430 - FAN ISSUE --> NOISY!

2012-08-09, 15:11 PM

Hi Andy,

 

Yes I was checking this on internet and found side by side benchmark with i5 and i7 both ivy bridge. In idle are both nearly on identical consumpiton and also same heat. During load i7 is producing more heat than i5, also i7 could heat up more quickly than i5, but if cooling is made properly notebook during normal work couldnt be noisy.

 

David

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07-21-2012

UK

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Re: T430 - FAN ISSUE --> NOISY!

2012-08-09, 15:29 PM

wrote:

Hi Andy,

 

Yes I was checking this on internet and found side by side benchmark with i5 and i7 both ivy bridge. In idle are both nearly on identical consumpiton and also same heat. During load i7 is producing more heat than i5, also i7 could heat up more quickly than i5, but if cooling is made properly notebook during normal work couldnt be noisy.

 

David


Thanks for checking that, David.  It's good to know it's not likely the processor. 

 

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159 Posts

02-07-2009

Portland, OR

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Re: T430 - FAN ISSUE --> NOISY!

2012-08-09, 16:28 PM

Thanks for your reply david99.

Yeah, I'm not that worried as you guys. My X230T is running fine and quiet most of the times. I searched on lenovo's 4 wire fan vs 3 wire fan, and this thread is where I landed. I just hope lenovo is not cheaping out on the critical component like a system fan.

 

 

As for the i7 vs i5 heat differences, the i7 will definitely generate more heat because of that extra 1MB cache it works with. But this should be only during heavy usage, and unnoticeable during idle like one member already mentioned. On a desktop computer, even disabling HyperThreading on a i7-2600K shaves off about 10W energy when full load. Of course, I need the performance, so I keep HyperThreading on, and it really helps about 10-20%.

 

I hope you guys T430's fan noise problem gets sorted out. That's insane to be suffering from fan noise on such a big laptop. I'm used to 12-13 inch ultra portable laptops, so the loud fan noise is more acceptable to me since I know these are more limited in space.

 

I'm also still curious about my X230T why they switched 4 wire Delta branded fan (P/N 04W6929) to the 3 wire Toshiba branded fan (P/N 04W6930). I just hope it's not one of those cost saving things.

 

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73 Posts

03-08-2008

Slovakia

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Re: T430 - FAN ISSUE --> NOISY!

2012-08-09, 19:52 PM

Hi HP79,

 

I think it is because Lenovo has more FAN suppliers, Toshiba, AVC, Delta probably also Panasonic and they should be fully interchangeable of course if proper FAN controll is designed, then you are fine as on your X230. I think you dont need to worry about your new fan.

 

David

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21115 Posts

12-20-2008

Australia, Melbourne

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Re: T430 - FAN ISSUE --> NOISY!

2012-08-10, 3:54 AM
Fukuwara is another supplier that Lenovo uses for fan. Each of the fan would have slightly different performance and noise profile, but the BIOS firmware that controls the fan doesn't cater to the different fan's unique noise profile.
Regards,

Jin Li

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

I am a volunteer, and not a paid staff of Lenovo or Microsoft
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73 Posts

03-08-2008

Slovakia

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Re: T430 - FAN ISSUE --> NOISY!

2012-08-10, 6:52 AM

wrote:
Fukuwara is another supplier that Lenovo uses for fan. Each of the fan would have slightly different performance and noise profile, but the BIOS firmware that controls the fan doesn't cater to the different fan's unique noise profile.

This is just the problem. My tought is that 4 wires PWM FANs are using some level of voltages and difference of rotation are controlling by PWM - pulse width modulation. So then it answers question why 3 wire fans are so noisy. Example:

 

4 Wire fan: will get 4 vots - lengt of pulses will be x then on the same 4 volts when get pulse leght y it will have different rotation speed, when it want to change rotation dramatically also voltage is increased.

 

3 Wire fan: I assume that this is controlled only by amount of voltage provided so this means when it get from beggining 4 volts for example it will start blow immediatelly at 4k for example (eve when 4 wire fan on this voltage with pulses x could run on 2k).

 

This could be reason why 3 wire fan have only lets say 2 modes and it is from beggining so loud, while 4 wire fan could be controlled more precisely even without changing voltage everytime.

 

David

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8095 Posts

11-19-2007

United States of America

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Re: T430 - FAN ISSUE --> NOISY!

2012-08-10, 17:37 PM

All,

 

Appreciate the pictures and comparison of results.   I would ask that if you want us to work on this issue for you (to investigate as a concern) that you share the information that Nine is requesting - we need this to open a formal case and work with our technical and engineering teams.

 

There are a number of possibilities here:

 

- That all of these work pretty much the same, and differences in customer environments (whether in an office where there is background noise or white noise generators that might make this less noticable vs in a quiet home.  Whether surrounding surfaces reflect sound or absorb it, and differences in individual hearing accuity and personal opinion on what is normal and acceptable.)

 

- It could also be that there are some differences in the sound levels of different supplier fans

 

- It could also be that there is some variability in individual fans, or individual systems.

 

As we work through this, we really need to develop a clear definition of the concern:

 

Is it that the fan runs to fast, or cycles up and down, or just that the acoustics of it are louder than other systems?

 

I note there are others participating here that are talking about their experiences with other models like T520 and X230 - that's ok, but if this thread is focused on T430, then we need to focus on those who have a T430 and believe the fan is abnormally loud.

 

We've been through a number of these discussions in the forum, and I'd like to try to get a clear definition earlier this time and try to get this resolved.   If we have a consensus that the issue is the difference in two different supplier fans, that may be easier for us to have a look at.  If that isn't the variable, then we may need to look at individual systems (from you) if we can't otherwise define a fan behavior pattern that we can test for - like fan constantly running at high speed, etc.

 

TrippleC,

 

Assuming that you have the Lenovo power manager installed, it sounds like your system is running hotter than expected.  

I would guess that either the fan heat sinks are plugged up with dust, or that either the CPU or GPU isn't transferring heat effeciently to the heat sink (might need to clean and re-apply thermal paste).   In such a case, the fan will run at higher RPM and the system will still exhibit higher reported temps. 


Thanks


Mark

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