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35 Posts

08-28-2019

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Y540 concerned about temperatures

2019-09-04, 16:50 PM

Hello,

 

I have issues with the temperatures of my new Y540 15 inches with the i7 9750H and RTX 2060. 

 

I bought this laptop with the expection of having a great thermal performance, as the reviewers and users said. Unfortunately, the laptop gets extremly hot under gaming and synthetic benchmarks alike. (For the following results I had balanced mode in both Vantage App and Windows, also fans are clear, gets good airflow, BHCN29WW BIOS, ambient temp is 25 degrees and, now hold onto something, I applied an undervolt of -135mv)

 

As soon as I start for example AIDA64 (see unbenannt.png below), Cinebench R20 or Prime95, the CPU immidiately (!) jumps to 94 degrees. When playing Witcher 3, the CPU also averages at 94 degrees in CPU intensive situations and stays at 80-88 degrees in normal load. Only the GPU, that one is cool at no higher than 74 degrees. 

Fortunately, temps in idle are good averging at around 40 degrees. When using the battery the fans won't turn on at all. 

 

The onlx fix I have found is limiting the turbo boost clock speeds to 3.2 GHz on all cores using throttlestop. That way the CPU stays cool under all situations...but I basically limit the performance of my machine which can't be a longterm solution. 

 

I want to ask for other Y540 users if they have a similar rapid spike to 94 degrees when using those benchmarks? I contacted Lenovo support but they said that's normal. 

 

Thanks for every answer.

 

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61 Posts

08-27-2019

EG

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Re: Y540 concerned about temperatures

2019-09-04, 23:38 PM

I think that the issue is that lenovo optimises the fan curve for the best acoustics, not the best thermals, which would be fine on any other laptop other than a gaming laptop, as a fellow Y540 user I hope that they release a bios update to at least add the max fans function and I'll be happy.

I also did the same things you did (Underclock+Undervolt) and my thermals are sub 90 degrees, usually mid to low 80s,maybe a bit lower,  and my 1660ti usually avarages in the mid 70s with stock settings.

A better long term solution if you want maximum performance would be to get a cooler pad.

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35 Posts

08-28-2019

DE

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Re: Y540 concerned about temperatures

2019-09-05, 9:42 AM
So your Y540 reaches 94 degrees too instantly in AIDA64 or Prime95 when you don't underclock the CPU?
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61 Posts

08-27-2019

EG

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Re: Y540 concerned about temperatures

2019-09-05, 12:05 PM

Didn't really try AIDA64, but I can confirm that the CPU gets way too hot for my liking if I let it go wild.

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35 Posts

08-28-2019

DE

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Re: Y540 concerned about temperatures

2019-09-05, 14:42 PM

I made a video.

 

https://streamable.com/gutzt

 

Pls tell me if that's normal?

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61 Posts

08-27-2019

EG

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Re: Y540 concerned about temperatures

2019-09-05, 14:50 PM

With what lenovo's doing, it is normal,also, I've updated my BIOS to the latest available version in my region (28WW) and I noticed that temps have gotten a bit worse, my CPU used to spike below 90, but now If I adjust speedshift to get better performance I average in the late 80s so I might downgrade if lenovo doesn't release something to remedy temps. 

Also do have in mind that this is while having my CPU underclocked to an all core max of 3.5 GHz

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35 Posts

08-28-2019

DE

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Re: Y540 concerned about temperatures

2019-09-05, 16:37 PM

Well, either it's the BIOS or a bad paste job. If the next BIOS is 29, then don't bother, because I already have that one.

 

Strangely, the GPU stays very cool, only CPU get's hot. Also the exhaust air is pretty lukewarm when only the CPU is running at 100%, only get's hot when the GPU kicks in, meaning heat transfer of the GPU works perfectly, but not so much with the dGPU. 

 

Maybe a repaste would help. But I'm uncertain if that would void warranty.

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61 Posts

08-27-2019

EG

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Re: Y540 concerned about temperatures

2019-09-05, 16:47 PM

Strangely enough, using 28WW, I also noticed that the discrete GPU is quite well cooled, the max MSI afterburner shows is 76c which is quite good for an extended gaming session.

For the repaste and warranty I'd recommend you check out lenovo's website for warranty info.

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35 Posts

08-28-2019

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Re: Y540 concerned about temperatures

2019-09-05, 20:50 PM

Yeah, same for me. GPU is pretty cool. Still, the CPU is very hot.

 

Are there any other Y540 users who could share their experiences here?

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1 Posts

09-12-2019

DE

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  • Message 10 of 83

Re: Y540 concerned about temperatures

2019-09-12, 0:43 AM

Hi everyone,

 

same here with the i5-9300h and GTX 1650. GPU never gets above 75 degrees but my CPU gets 99° (not sure if HWMonitor just doesn't show more than that) and that really takes my joy of gaming. I would repaste it but I don't want to loose warranty. Would be very happy about some sort of fix from Lenovo.

 

 

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