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95 Posts

09-13-2019

Finland

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Re: Y540 concerned about temperatures

2020-01-07, 11:32 AM

Actually it seems that the Quiet mode is almost excatly the same as -0,148v undervolt and 4Ghz underclock. Same max temp on CPU and almost same results too. Although a bit different CPU which must be remembered.

-A-J-
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01-17-2020

United States of America

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Re: Y540 concerned about temperatures

2020-01-17, 8:46 AM

I guess I'll have to use quiet mode to keep temps. down because I can only undervolt to -125 cache and core. Anything more and my laptop starts to freeze during general use, browsing, youtube etc.

 

Does anyone else notice on their laptop while using HWMonitor that Core #2 (i7-9750h) usually runs hotter than the others?

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9 Posts

12-22-2019

Romania

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Re: Y540 concerned about temperatures

2020-01-17, 9:06 AM

Looking normal in HWinfo for me (i5-9300H). Core temps are spread our evenly:

 

 

Uneven core temps usually are a sign of a bad paste-job. If that's the case you should send it back if it's still in warranty.

Also, underclocking is a much better option in keeping temps under control than undervolting, at least in my case.

 

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100 Posts

06-01-2014

India

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Re: Y540 concerned about temperatures

2020-01-17, 9:11 AM

Yes core 2 runs hotter than rest while gaming or stress test. At idle all cores are nearly equal temperatures. Use balanced thermal profile and -140mV Undervolting. And 3.5ghz underclocking.

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01-17-2020

United States of America

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Re: Y540 concerned about temperatures

2020-01-17, 22:45 PM

Exact same thing on mine except for the undervolt. I've seen the same thing on other forums too. Either we all have a bad paste job or it's just the way the cpu (mine is i7-9750h) runs in this laptop.

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95 Posts

09-13-2019

Finland

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Re: Y540 concerned about temperatures

2020-01-20, 5:47 AM

I dont have any consistent and clear difference in core temps. Sometimes they are quite the same and sometimes one core can be up to 10c° warmer than coolest one. And they change (which one is warm and which one colder).

 

Edit: And this while playing games.

-A-J-
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1459 Posts

06-08-2013

Spain

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Re: Y540 concerned about temperatures

2020-01-20, 18:53 PM

Undervolting will not improve temperatures, it can actually increase the temperatures. I've seen some machines be able to maintain higher clockspeeds because of undervolting, but then they would use again have a higher absolute voltage because of the higher clock speed.

If you undervolt, you should also lower the short and long turbo boost TDP.

Don't forget physics:
TDP = Amperage x Voltage.

 

So if you undervolt, lower the 35W-45W TDP to something like 25-30W TDP. It should be plenty for gaming. I usually use 10W on my ThinkPad P51s and ThinkPad T560

Kind regards,

Jonas Hendrickx

Lenovo Insider, Windows Insider MVP

 

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2 Posts

04-25-2020

United States of America

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Re:Y540 concerned about temperatures

2020-04-25, 21:22 PM

Hi I have a bit of a problem if anyone can help...Once the GPU reaches 60 degrees the fans turn to max and tries to keep it at 60 or below and it is very loud. Is there a faulty or do I need to config it somehow? I tried everything.

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100 Posts

06-01-2014

India

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Re:Y540 concerned about temperatures

2020-04-26, 5:45 AM

Its a good thing that fans come into play at 60c gpu

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3 Posts

09-05-2020

United States of America

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Re:Y540 concerned about temperatures

2020-09-05, 21:54 PM

hey guys anyone found a fix or tried to repast the cpu and any improvements am having 50 on idle and am hitting around 95 with aida64

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