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5 Posts

06-08-2021

United Kingdom of Great Britain and Northern Ireland

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Legion 5 Pro CPU temperature

2021-06-08, 21:42 PM

Hi. 

 

I just received my Legion 5 Pro today and was monitoring the CPU temperature with MSI Afterburner whilst playing AOE3 on max settings. The game was extremely smooth but the CPU temperature hit 100°c at one point.

 

Has anyone else had such a high CPU temperature? As soon as I noticed I stopped playing because it seems extremely hot and read elsewhere that the max temperature was 105°c

 

First time I've had a gaming laptop so any advice much appreciated. 

 

Thanks

 

 

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4576 Posts

04-23-2019

United States of America

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Re:Legion 5 Pro CPU temperature

2021-06-09, 9:10 AM

Hello @Marcusdr,

 

Welcome to the Community Forums.

 

I would suggest trying to update the BIOS of the machine. Some members reported better thermals after BIOS updates were done.

You can download it using this link (please note that you may have to enter your serial number in order to get the right file): https://pcsupport.lenovo.com/ph/en/products/laptops-and-netbooks/legion-series/legion-5-pro-16ach6h/downloads/driver-list/component?name=BIOS%2FUEFI


Hope this helps.
Regards,
Jack_Lenovo1



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5 Posts

06-08-2021

United Kingdom of Great Britain and Northern Ireland

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Re:Legion 5 Pro CPU temperature

2021-06-09, 16:26 PM

Hi.

 

Thanks for the suggestion. BIOS is already the latest version.

 

I have been doing some further testing and have noticed the the CPU seems to be getting stuck in boost mode.

 

I have attached the speed/temp of the different modes but I have to use Fn Q to cycle through them 2 or 3 times while watching the monitor to know when it has dropped to the appropriate level.

 

Any other ideas what could be causing this?

 

Thanks

 

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1 Posts

06-18-2021

Germany

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Re:Legion 5 Pro CPU temperature

2021-06-18, 10:56 AM

A BIOS update wont help you in 99.9% of cases.

 

The reason why you get over 100°C on your CPU is very simple. 

The amount of pressure is not evenly distributed to the CPU DIE of your L5P-cooler which is actually a very powerfull one.

Why is that so? Because you would need 4 screws with a spring but your cooler has only 3 on the CPU.

Isnt 3 enough? Yes it is, if they would be aligned in a perfect equilateral triangle but on the L5P it isnt so you cant get an optimal pressure distribution.

The designer of the Mainboard, which is produced by HSB, slept a little bit or just had a bad day.

Can i fix it with repasting the thermalgrease? No!

How can i fix it? I managed to design a working clamp modification. On the backport side is an unused screwhole which is in perfect position to add pressure on the missing pressure/screw-side. My measurements proofed perfect distributed pressure on the CPU DIE which leads to ~78°C maximum CPU temp. on stresstesting in 21°C ambient. Add to that max temp +/- 5°C due to bad or good chip-binning which you cant influence. You have to deal with what you get.

Will my warranty void if i try to fix that? Yes, aslong HSB or Lenovo cant provide such a simple&cheap fix in the replacementparts-list. But you should have the right to repair on your own, depending on the country where you live, without voiding your warranty.

All that is needed is a rubber washer, a spring, a screw and a Z-clamp/bracket. 

How does the clamp/bracket look like? Like this:

Z shapeor this

Wait untill Lenovo can order & provide the fix. Dont do it at your own risk! (Aslong you dont have the experience, tools and materials.)

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1 Posts

06-27-2021

Switzerland

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Re:Legion 5 Pro CPU temperature

2021-06-27, 19:23 PM

Hi,

 

that sound interesting could you send a picture of your new clamp that makes more pressure. These high temps of the cpu annoy me and makes the laptop too loud.

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1 Posts

09-09-2021

Greece

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Re:Legion 5 Pro CPU temperature

2021-09-09, 22:26 PM

hi!

try to disable hybrid mode. I play warzone  4 hours and I have 65-70 °C at cpu

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64 Posts

07-11-2021

United Kingdom of Great Britain and Northern Ireland

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  • Message 7 of 10

Re:Legion 5 Pro CPU temperature

2021-09-10, 9:47 AM

@Jack_Lenovo1 I've experienced worse temperatures after a BIOS update. You've yet to reply to my post to follow up on regarding the issue

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8 Posts

06-05-2021

United States of America

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Re:Legion 5 Pro CPU temperature

2021-09-10, 21:54 PM

are you using hybrid mode? have you tried setting it to dedicated only? I have a legion 5 and what i did was use rweverything to set the fan behaviour to match whats used in dedicated only mode as shown here http://forum.notebookreview.com/threads/lenovo-legion-5-and-7-2020.832593/page-23

 

also i set my cpu power settings to "effecient aggresive" by doing this-

  • Press Start > Type Regedit > Open it
  • > Go to HKEY_LOCAL_MACHINE > SYSTEM > CurrentControlSet > Control > Power > PowerSettings > 54533251-82be-4824-96c1-47b60b740d00 > be337238-0d82-4146-a960-4f3749d470c7
  • > Right click Attributes > Modify the value of ‘Attributes’ from 1 to 2 > Data should change to ‘0x00000002 (2)’. This will now show a hidden power option. From there, right-click on your battery icon > Power options > On any of the power plans go to ‘Change plan settings’ > ‘Change advanced power settings’ > Expand ‘Processor Power Management’ > Expand ‘Processor performance boost mode’ > Change from "Aggressive" to whatever you desire for your current power plan.

my cpu never goes above 58c with both of those techniques, i have my other power plan set to aggresive and it still never goes above 72c stabilizing at 69c and gpu never goes above 66c being stable around 63c but fluctuating a bit more at full load that the cpu. hope this helps

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1 Posts

08-02-2021

India

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  • Message 9 of 10

Re:Legion 5 Pro CPU temperature

2021-09-20, 5:33 AM

What games do you play and at what settings ? I play warzone mostly...at first the fans never seemed to go beyond a certain RPM, but now(after week of use) it keeps cranking up periodically, the GPU temp has risen from 75 degrees to 78-80 (which i think is still fine). I have enabled Hybrid Mode, Overdrive and keep the profile balanced. However, the CPU peaks at 92-95. 

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8 Posts

06-05-2021

United States of America

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Re:Legion 5 Pro CPU temperature

2021-09-20, 6:16 AM

I mine crypto with my GPU, and play league of legends without affecting hashrate by setting it to use the ryzen graphics. the nvidia GPU is at 100% 24/7 and i overclock the memory by 899 Mhz while underclocking the core by -770 Mhz, I have openhardware monitor in the notifications and have never seen the temp go above 66c, it will go to 61-63 at night and in the day will be around 65-66c,I mine monero on my amd cpu aswell which is at 40% using 6 cores (also 24/7) never going above 58c even when gaming which puts it to 100%. However I set in the power settings to "effecient aggresive" which i explained in more detail in the previos post, so the cpu stays around 2.8-2.9 Ghz. If i was to set it to default by switching to my other power profile which has it set to "aggresive" it will immediately jump to 80 and then settle to 78 or so with as its mining monero 24/7 i just keep it on effecient aggresive.  2.8 Ghz is perfectly fine for most games and I get 2.5 MH/ps like that while switching the power profile with aggresive it will get 2.9 MH/ps maybe a few frames difference tbh not worth a 20c increase to me unless im benchmarking or doing something like proccessing a youtube video etc. I posted a screen shot of my hashrates with my legion 5's GTX 1660 ti in the Ethereum miner i use to make this thing pay itself off lol, which is a couple monthes away.

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