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48 Posts

08-28-2019

Germany

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Re: Y540 concerned about temperatures

2019-09-29, 7:09 AM

Update.

 

After a couple of days, temperatures are rising again. Now I am at 94 degrees and 90 watts on cinebench again (after my repaste it was at 81 degrees) Room temp is even a bit lower than before.

 

This really is so, so frustrating. It seems like Kryonaut dried out fast :(

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3608 Posts

04-02-2014

Mexico

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Re: Y540 concerned about temperatures

2019-09-30, 14:38 PM

Limiting CPU is a LONG TERM solution since it hardly results in performance loss.

 

I've had my CPU limited at 3.2 GHz for a long time now and it provides stable, solid performance. The only place this will be a bit limiting is video processing.

 

As for re-pasting, I cannot say how well it was done because a paste has to set in (get a bit dry) but it is the hardening that kills its performance. i doubt its the paste at fault here, could be the application or just the way the laptop thermals are behaving.

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86 Posts

08-28-2019

Czech Republic

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Re: Y540 concerned about temperatures

2019-10-01, 0:32 AM

It’s probably combination of both things, I have tested all the way from BIOS 21WW to 32WW and I can tell you that 26WW is the best all Roudné, 27WW is decent and after 28WW it only screw things up.

 

I would guess that thermal paste job is also due to change, because of those big differences among core temps.

 

well GPU on this laptop is always cool, it has one own air vent and generally GPUs dont get as hot as proccessors. It’s totally normal temps go up to 90 in benchmarks as those are completely unrealistic scenarios, without any tweaks my unit has spikes to 90 and stars in low 80 while gaming.

 

and btw. It’s ok warranty wise as long as he does not damage anything on the way there.

 

edit: I see you have changed paste already.

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86 Posts

08-28-2019

Czech Republic

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Re: Y540 concerned about temperatures

2019-10-01, 0:35 AM

While it’s so easy to undervolt (takes like 5 minutes) and if you also underclock a bit and lower turbo power limits a bit, you will hardly ever get over 80 again. Check ultimate Y540 guide on reddit for more info.

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86 Posts

08-28-2019

Czech Republic

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Re: Y540 concerned about temperatures

2019-10-01, 0:47 AM

Even with that undervolt? What is your average temperature in some AAA game title? You can try to push undervolting little further. Did you undervolt cache as well? Leave that one on 135 and push core to 150 or 160.

also in “TPL” card in ThrottleStop change turbo power limits, long to 65 and short to 90. Set speedshift to 64 and enable it. If it still does not work properly, go to fivr and change all turbo ratios to 3.6. You won’t experience almost no performance drop anyway.

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97 Posts

09-13-2019

Finland

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Re: Y540 concerned about temperatures

2019-10-01, 11:08 AM

 wrote:

While it’s so easy to undervolt (takes like 5 minutes) and if you also underclock a bit and lower turbo power limits a bit, you will hardly ever get over 80 again. Check ultimate Y540 guide on reddit for more info.


It really does not seem that easy to me. You have to know what you are doing I think. And I dont know. There are so many sliders and buttons and options on Throttlestop and firstly I do not know that are these changes always on, or do you have to use Throttlestop 24/7 to keep CPU undervolted etc. 

 

That is the reason why I have decided - for now - to use the Quiet mode instead. It does not affect that much on game fps, but keeps my CPU heat at about 80c° while GPU stays much cooler.

 

If there would be a program that would really be easy to use I might try undervolting instead.

 

I think I will try to ask Intel what is their opinion on affects of heat on 9750H. Is it really designed so that it can be used for years and years with temperatures near 100c° or not.

-A-J-
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86 Posts

08-28-2019

Czech Republic

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Re: Y540 concerned about temperatures

2019-10-01, 15:27 PM
Well it can but you will probably want it to last 6 instead of 4 years for example.

Find “Adress that hot i8750” video on YouTube everything is so **bleep** easy explained in that video.
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97 Posts

09-13-2019

Finland

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Re: Y540 concerned about temperatures

2019-10-01, 17:07 PM

 wrote:

Find “Adress that hot i8750” video on YouTube everything is so **bleep** easy explained in that video. 

Thanks. That was a very good video indeed.

 

Still wondering why undervoltage is better than Quiet mode. While in Quiet I get 4,2GHz out of the CPU with temps like 81c° so how much faster is my laptop with undervolting instead of Quiet mode? Is there a good simple test program to find out?

-A-J-
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1 Posts

10-05-2019

Greece

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  • Message 39 of 83

Re: Y540 concerned about temperatures

2019-10-06, 0:48 AM
i had the same experience with my i7-9750H was getting temperatures like 98 99 celcious while i was playing(pubg) and from lenovo vantage i just change the mode to quiet the temps of cpu fall a lot like 70 75 while i was playing the same game
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100 Posts

06-01-2014

India

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Re: Y540 concerned about temperatures

2019-10-06, 4:35 AM

quiet mode uses the 2.5 Ghz or non turbo base clock of i7. Its the same as setting processor max state to 99% in power profile. This gives the best cooling results. But also look at first 3 min of this video to learn limit cpu power for temperature control by throttlestop.

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