CPU i78750H power limit throttling

[VEXEnzo]

Hi guys. So I recently got a new laptop with an i78750H. When I run a stress test on it It goes up to 70C (72C max) and after like 20 sec I get "Power Limit Throttling". The CPU should go up 4.1Ghz but it gets up to 3.9Ghz and start going down cuz of the throttling.

 

There is any fix for it?

[Jurrunio]

No. That's why Intel's marketed power draw means nothing on desktop (as the CPU raises clock as much as possible while ignoring power target) and marketed frequency means nothing on mobile platforms (when it's limited by power target in the first place).

 

In other words, "max 4.1GHz single core, 3.9GHz all core" is just a gimmick

[Radium_Angel]

11 minutes ago, VEXEnzo said:

There is any fix for it?

Kinda doubt it, you are hitting the limits of physics.

I suppose it's possible to take the laptop apart and but a better cooling solution on, but given the trend towards sealing the laptops and making them super thin, doing anything inside is...unlikely.

 

May throw some external active cooling (like those lapboards with fans) at it?

What model is the laptop BTW?

[VEXEnzo]

21 minutes ago, Radium_Angel said:

Kinda doubt it, you are hitting the limits of physics.

I suppose it's possible to take the laptop apart and but a better cooling solution on, but given the trend towards sealing the laptops and making them super thin, doing anything inside is...unlikely.

 

May throw some external active cooling (like those lapboards with fans) at it?

What model is the laptop BTW?

HP OMEN 17-an107np 17.3"

 

Gtx 1060

16Gb ram

i7 8750H

1080p 120Htz

[porina]

34 minutes ago, VEXEnzo said:

Hi guys. So I recently got a new laptop with an i78750H. When I run a stress test on it It goes up to 70C (72C max) and after like 20 sec I get "Power Limit Throttling". The CPU should go up 4.1Ghz but it gets up to 3.9Ghz and start going down cuz of the throttling.

 

There is any fix for it?

It is working as intended. A maximum of 3.9 GHz is expected if all cores are active. If up to 2 cores are active, you could see 4.1. Up to 4 cores active, you can see up to 4.0. On enthusiast built desktops that would be the end of the story. On laptops, after a time they usually throttle back to a lower power (=TDP) and clocks may drop then. I assume this is what's being seen. The intent of this is in the long term the power usage is at TDP, while allowing short term boosting beyond that for better responsiveness of bursty tasks.

 

There may or may not be ways to override this behaviour, but it probably isn't worth it as the cooling solution is unlikely to cope with going beyond that. You can check the bios for any settings. It is unlikely outside of "overclocking" laptops. If you install IntelXTU, see if that lets you change parameters. It'll probably be overridden by the bios control anyway. You might also have some benefit from under-volting, but this is a risk to stability.

[unclewebb]

The Core i7-8750H has a 45 Watt TDP rating.

https://ark.intel.com/content/www/us/en/ark/products/134906/intel-core-i7-8750h-processor-9m-cache-up-to-4-10-ghz.html

 

Long term, this CPU is designed to throttle and slow down so it does not exceed 45 Watts.

3 hours ago, VEXEnzo said:

There is any fix for it?

Some laptops are better designed than others.  Laptops built on the Tongfang chassis have better than average cooling and they also allow a user to increase the turbo power limits sky high so they can run the 8750H indefinitely at its full Intel rated speed.  That means they can run steady at 3.9 GHz when all 6 cores are active.  This thread at Notebook Review has lots of tips on how you can try to achieve that goal.  

 

http://forum.notebookreview.com/threads/tongfang-gk5cn5z-gk5cn6z-gk5cq7z-gk5cp0z.815943/

 

Laptops like this are built for enthusiasts that are interested in getting maximum performance out of their investment.  They are easy to work on and can be fully adjusted for maximum speed.  Many laptops built by large corporations are limited so you will not be able to run them at full speed for any length of time.  If you just bought your OMEN, take it back to the store, tell them you made a big mistake and that it is not fit for your needs.