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

English Community

Gaming – Lenovo LegionGaming Laptops
All Forum Topics
Options

97 Posts

09-13-2019

Finland

173 Signins

2016 Page Views

  • Posts: 97
  • Registered: ‎09-13-2019
  • Location: Finland
  • Views: 2016
  • Message 41 of 83

Re: Y540 concerned about temperatures

2019-10-07, 7:39 AM

 wrote:

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.


Still wondering about two things. I'm sorry that I just can't get it, but I'm not used to playing with undervolting or anything like that.

 

1.) What does that 2,5GHz base clock mean? Since on Quiet mode CPU goes up to 4,2GHz.

2.) Why should I use Throttlestop instead of Quiet mode? What more do I get if I do that?

-A-J-
Reply
Options

100 Posts

06-01-2014

India

78 Signins

675 Page Views

  • Posts: 100
  • Registered: ‎06-01-2014
  • Location: India
  • Views: 675
  • Message 42 of 83

Re: Y540 concerned about temperatures

2019-10-07, 14:01 PM

1. 4.2 ghz during quiet mode cant be all 6 cores 4.2 ghz, it would be single or two cores 4.2 ghz

2. If you are getting good temperatures on quiet mode then no need to do anything

Reply
Options

97 Posts

09-13-2019

Finland

173 Signins

2016 Page Views

  • Posts: 97
  • Registered: ‎09-13-2019
  • Location: Finland
  • Views: 2016
  • Message 43 of 83

Re: Y540 concerned about temperatures

2019-10-08, 12:00 PM

 wrote:

1. 4.2 ghz during quiet mode cant be all 6 cores 4.2 ghz, it would be single or two cores 4.2 ghz

2. If you are getting good temperatures on quiet mode then no need to do anything


 

1. According to HWmonitor all cores go to near 4,2 GHz. 

 

2. Ok.

 

Edit: All cores at 4191Hz while playing Doom on Quiet mode.

-A-J-
Reply
Options

97 Posts

09-13-2019

Finland

173 Signins

2016 Page Views

  • Posts: 97
  • Registered: ‎09-13-2019
  • Location: Finland
  • Views: 2016
  • Message 44 of 83

Re: Y540 concerned about temperatures

2019-10-10, 16:17 PM

Tested with 1h session on FarCry3 which seems to be more demanding on CPU than Doom is. The result was that while temps stayed at Max 82c° the CPU reached - with all cores - maximum of 4390MHz. This on Quiet mode.

 

Link to pic. https://www.dropbox.com/s/6x7sthff0wm29by/Heat_FC3_VS_CM_NoFan_001.png?dl=0

 

-A-J-
Reply
Options

8 Posts

10-31-2019

Canada

22 Signins

183 Page Views

  • Posts: 8
  • Registered: ‎10-31-2019
  • Location: Canada
  • Views: 183
  • Message 45 of 83

Re: Y540 concerned about temperatures

2019-10-31, 2:15 AM

I got my laptop (Y540, i7 9750H, GTX 1660 Ti)  and it came shipped with WW28 and I want to downgrade to WW26 because you said it's the best version how do I do it can you please guide me cause whenever I try  to install it this error message shows up saying "The version of ROM file is not newer than that of BIOS" (screenshot given)

Reply
Options

43 Posts

11-01-2019

Poland

53 Signins

468 Page Views

  • Posts: 43
  • Registered: ‎11-01-2019
  • Location: Poland
  • Views: 468
  • Message 46 of 83

Re: Y540 concerned about temperatures

2019-11-08, 19:11 PM

First you have to enable "Downgrade BIOS" option in bios menu because it is disabled out of the box.

Then save exiting bios and run 26ww file in Windows 10.

Reply
Options

8 Posts

10-31-2019

Canada

22 Signins

183 Page Views

  • Posts: 8
  • Registered: ‎10-31-2019
  • Location: Canada
  • Views: 183
  • Message 47 of 83

Re: Y540 concerned about temperatures

2019-11-09, 1:59 AM

Did just that on the same day I commented haha, but thanks anyways bro!

Reply
Options

1 Posts

11-21-2019

Belarus

1 Signins

23 Page Views

  • Posts: 1
  • Registered: ‎11-21-2019
  • Location: Belarus
  • Views: 23
  • Message 48 of 83

Re: Y540 concerned about temperatures

2019-11-21, 8:24 AM

Hello!

I have problem with PCH overheating.

While CPU and GPU has 70-75 degrees after 20-30 min of gaming. PCH has 80.

And it's cooling too slow.

While browsing and YouTube PCH has 55-60 degrees,CPU and GPU 45-50.

Lenovo legion y540 17"

I7 9750h,1660ti.

I've heard that y530 had problem with thermal pad is not tight at the PCH,but at my 17" it's all closed with plastic.

Has anyone faced this problem?

80 degrees at PCH,how bad is it?

P.s.: sorry for bad English.

 

Reply
Options

9 Posts

12-22-2019

Romania

11 Signins

116 Page Views

  • Posts: 9
  • Registered: ‎12-22-2019
  • Location: Romania
  • Views: 116
  • Message 49 of 83

Re: Y540 concerned about temperatures

2019-12-22, 9:12 AM

I've got a Y540-15IRH laptop with i5-9300H and RTX2060 with bios updated to BHCN35WW. 

 

As others pointed out, the GPU stays real cool in the 60s even under the heaviest loads so no need to tweak that.

The problem here is with the CPU, which under stock settings reaches 90+ easily at which point it goes into thermal throttling, which is bad. It basically behaves like a wild horse under steroids, lol!

I went through all BIOS version with no effect on cpu temps.

The only thing that works is undervolt+boost underclock.

Undervolt has no effect unless you push it to more than -135mv. I've found the "sweet spot" at -150mv on both the core and cache, set with Intel XTU.

While this alone is enough to keep your CPU temps under 90C, personally I wasn't satisfied.

So the final solution (apart from undervolting) was to also limit the max CPU frequency to 3.5Ghz, which keeps the CPU between 70-78C in the most demanding games (Cod MW, The Witcher3, StarWars Jedi etc), and even under 70C during the less demanding gaming sessions (Alien Isolation, Hearthstone etc). You can set the limit lower if you want even better results. I've used a Windows 10 registry hack to be able to set max frequency in power management options.

 

In my opinion the real killer to this CPU's thermals is the CPU BOOST. I think Intel pushed it too much going from 2.4 stock up to 4.1 on Boost.

 

The only problem which I have yet to find a solution is that LENOVO keeps resetting the undervolt values if I turn off the laptop (windows shutdown). Basically if the offset voltage isn't set to stock values, it resets them during bios boot-up. This doesn't happen during restarts though.

So if anyone got a fix for that I'm all ears. Thanks.

 

Reply
Options

97 Posts

09-13-2019

Finland

173 Signins

2016 Page Views

  • Posts: 97
  • Registered: ‎09-13-2019
  • Location: Finland
  • Views: 2016
  • Message 50 of 83

Re: Y540 concerned about temperatures

2019-12-22, 16:56 PM

What kind of 3D mark (demo version) results do people get with undervolted / clocked machines? How much does it affect on performance? I ask because Quiet mode vs. Performance mode does affect for example to the demo test of Time Spy about 550marks.

-A-J-
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