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5 Posts

05-06-2020

India

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Simple guide to fix non thermal throttling in Lenovo Y540

2020-05-20, 14:22 PM

Hi All,

 

I recently got a Lenovo Y540 Laptop with the following specs:

 

Intel Core i7 9750H

NVIDIA RTX 2060

1 TB SSD

16 GB RAM

144hz screen

230 W charger

 

I was facing a lot of issues in demanding games due to CPU throttling down to 800 mhz. Upon inspection I saw that the reason was "BD PROCHOT" and created some queries:

https://tinyurl.com/ybt3a6hk

https://tinyurl.com/y9hc9agn

https://tinyurl.com/y9tl7udj

 

It was not due to thermal throttling of any component since all of my components were within 75c under load. Upon further investigation, I figured out it was due to my graphics card power throttling and sending a signal to my CPU to throttle. I was able to fix it this way (WARNING: DON'T USE THE EXACT VALUES I HAVE CONFIGURED, each laptop hardware is different, fine tune yours to get the correct values):

Install MSI After burner (Non beta)

Do Ctrl + F to open the FREQ/VOLAGE Graph

You can follow any undervolting guide for your graphics card to find a suitable voltage/freq that doesn't consume a lot of power

For my card, sweet spot was 0.725 V with 1500 mhz freq (DON'T USE THIS EXACT VALUE)

To see how much power your GPU is consuming, install HWinfo and use Sensors only part

Tweak voltage till you are no longer power throttling in GPU

CPU will not throttle anymore and you will get stable FPS in games

 

My results: FPS in AC:O went from 30 to 62!

 

DISCLAIMER: This was just a simple guide to help Y540 owners figure out the cause of non-thermal throttling. Don't use the values out of this post, I am not responsible for any damage that might occur.

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2 Posts

05-25-2020

India

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  • Registered: ‎05-25-2020
  • Location: India
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Re:Simple guide to fix non thermal throttling in Lenovo Y540

2020-05-26, 5:01 AM

i have the problem

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1 Posts

06-11-2021

India

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  • Posts: 1
  • Registered: ‎06-11-2021
  • Location: India
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  • Message 3 of 3

Re:Simple guide to fix non thermal throttling in Lenovo Y540

2021-06-11, 12:32 PM

I have this issue can you suggest me some videos to fix it. I'm super noob at these stuff.

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