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ananaspizzamies
Token Ring
Posts: 49
Registered: ‎09-12-2019
Location: FI
Views: 652
Message 141 of 179

Re: Bring back fan control to the Legion Y740


@Axel1515 wrote:

Hello, is the new bios update resolve the problem of heat ? 31ww ? or temperature falling ? 

Sorry for my english, i come from Belgium Smiley Happy 

Thanks for your reply Smiley Happy 


That BIOS update does not repair this problem.

-A-J-
Axel1515
Paper Tape
Posts: 4
Registered: ‎09-14-2019
Location: BE
Views: 643
Message 142 of 179

Re: Bring back fan control to the Legion Y740

ah ok ok :/ any solution so ? The undervolt is great for this problem ? Smiley Happy Thanks

NeoGeo999
Core Memory
Posts: 24
Registered: ‎04-07-2019
Location: IT
Views: 633
Message 143 of 179

Re: Bring back fan control to the Legion Y740

An undervolt of -125 together with TPL of 40w and 45w "solve" the problem

Axel1515
Paper Tape
Posts: 4
Registered: ‎09-14-2019
Location: BE
Views: 625
Message 144 of 179

Re: Bring back fan control to the Legion Y740

hello Smiley Happy 

40W for the short ? and 45W for the long ? 

not much ? 

Thanks

donotmention
SCSI Port
Posts: 80
Registered: ‎06-01-2014
Location: IN
Views: 617
Message 145 of 179

Re: Bring back fan control to the Legion Y740

No, 40 long, 45 short. Short means short burst of power so it has to be more than long value. Long means where CPU power will remain most of time.

ananaspizzamies
Token Ring
Posts: 49
Registered: ‎09-12-2019
Location: FI
Views: 615
Message 146 of 179

Re: Bring back fan control to the Legion Y740

I dont want to mess with voltages etc. yet, so I ordered this - https://www.coolermaster.com/catalog/coolers/notebook-cooler/notepal-u3-plus/ I know it probably wont do much, but I wanted a stand anyway and liked this one. I should have it next week. I will do some testing after that and let you know if it makes any difference with and without the fans.

 

Edit: On which side of the Y540 is the processor? If you look at your screen, left or right?

-A-J-
Axel1515
Paper Tape
Posts: 4
Registered: ‎09-14-2019
Location: BE
Views: 602
Message 147 of 179

Re: Bring back fan control to the Legion Y740

the processor is in the left i think Smiley Happy 

ok ok thanks for the information Smiley Happy 

it is available for the y540 ? i hope ...? Smiley Happy

ananaspizzamies
Token Ring
Posts: 49
Registered: ‎09-12-2019
Location: FI
Views: 347
Message 148 of 179

Re: Bring back fan control to the Legion Y740

Does anyone really know what excatly does those Vantage heat profiles really do?

 

Have you tried gaming with Silent mode? Since I think that it does somewhat the same thing  than undervolting or reducing wattage does. I replied to the Y540 topic already, so I won't repeat the whole thing, but some notes from my tests with Doom.

 

Moving from Performance or Balanced mode to Silent mode does not affect on game FPS that much. Laptop is a bit more silent. Temperatures go way down. I have a stock machine with stock settings (no undervolting or anything).

 

Affects 

- Max heat drops about 12c° from 93c° to 81c°.

- Wattage drops from  about 74W down to about 51W (that is the max I have seen on Silent).

- Voltage may not change at all. There is a minor difference, like 0,019V though. 1.358V to 1.339V.

- CPU max GHz does not change or if changes, changes very little. Maybe 100Mhz.

- Doom performance drops from steady 144fps to something like 100-144fps.

 

So I think Silent mode is ideal for gaming and you dont have to do any changes like undervolting. Am I missing something important here? Because it feels strange if the solution is this simple. For now I mean. I do hope they give back max fan at some update, because more power may be needed on heavier games.

-A-J-
Anastaciu
Punch Card
Posts: 42
Registered: ‎08-07-2019
Location: PT
Views: 327
Message 149 of 179

Re: Bring back fan control to the Legion Y740

Here, see these:

https://www.youtube.com/watch?v=dqwMpulffcQ&t=854s

https://www.youtube.com/watch?v=3W6pZCn1ltM

They are a bit long but this guy is very thorough, this should tell everything you need to know, he even mentions this thread...

donotmention
SCSI Port
Posts: 80
Registered: ‎06-01-2014
Location: IN
Views: 320
Message 150 of 179

Re: Bring back fan control to the Legion Y740

Yup silent mode diables the turbo boost of cpu leading to 2.5Ghz clocks and nice drop in temperatures without undervolting and there is not much loss of fps too in games

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