Help undervolting i7 8750h Throttlestop

[Mezzmix]

Okey so, ive ran a few tests now with cinebench and got the logfiles too. My big question is, why is it still thermal throttling? I got the cpu core on -250 and the cache at -130!??!?! How is that possible????

The 8750H has a 45W TDP power rating. The heatsink and fan are not designed to run your 8750H at 65W. That is why your computer runs so hot.

You can try changing the thermal paste or you can lower the power limits to 45W. That is all your cooling can handle.

Okey, so i should but it at somewhere between 45 and 50?

so ive lowered the max tdp, but still it reaches a higher tdp than i have set up?? How can i fix this, thanks in advance

 

[unclewebb]

why is it still thermal throttling?

Your laptop has bad cooling. Lots of laptops have bad cooling. Have you ever cleaned your laptop and replaced the thermal paste?

45 and 50?

The log file shows your computer is running too hot at 35W to 40W. An undervolt can only help a little. You have a BIG cooling problem.

 

[Mezzmix]

Your laptop has bad cooling. Lots of laptops have bad cooling. Have you ever cleaned your laptop and replaced the thermal paste?


The log file shows your computer is running too hot at 35W to 40W. An undervolt can only help a little. You have a BIG cooling problem.

i did clean it out, but the thermal paste is still from factory

Your laptop has bad cooling. Lots of laptops have bad cooling. Have you ever cleaned your laptop and replaced the thermal paste?


The log file shows your computer is running too hot at 35W to 40W. An undervolt can only help a little. You have a BIG cooling problem.

what would you suggest me to do?? Im helpless at this point

 

[unclewebb]

Try replacing the thermal paste.

If the heatsink is a piece of crap, this might not help. Crap laptops are everywhere.

 

[Mezzmix]

Try replacing the thermal paste.

If the heatsink is a piece of crap, this might not help. Crap laptops are everywhere.

i guess... but is there a way i can upgrade the heatsink?

 

[unclewebb]

upgrade the heatsink?

Laptop heatsinks are custom designed. There are usually few options to upgrade.

If you are feeling lucky, consider using liquid metal for thermal paste. That will help with the temps.

 

[Mezzmix]

hey once again,
ive noticed that my cpu and gpu run at cool temps now when i play gta 5 for example ( low 70 to high 70) but my cpu, even though its not throttling, is only doing like 3,o to 3,1 mhz. Why is so? Thanks in advance

Laptop heatsinks are custom designed. There are usually few options to upgrade.

If you are feeling lucky, consider using liquid metal for thermal paste. That will help with the temps.

 

[unclewebb]

@Mezzmix - Run another ThrottleStop Log File while you are playing GTA 5 for at least 15 minutes. Attach a log to your next post so I can check for any throttling.

If you have made any changes to your settings, post some updated screenshots of those changes.

 

[ARB2888]

Good day @unclewebb,

I have an almost 4 years old msi gs65-8rf i7-8750h 1070 max q, I had fan issues and replaced them and repasted my cpu (thats what the service center said) before 2 years, I am using a 32 inch 1440p monitor.

I have read some of your tips and suggestions above, can you please check out my settings and logs to help me maximize my performance and also maybe discover some issues (maybe I need a repaste or there is something wrong with the fans due to heat...)?

The log attached shows a league of legends 35 minutes match, I did not notice any performance issues in the game.

Thank you.

 

[unclewebb]

Download ThrottleStop 9.4. The Turbo Power Limits window is new and improved. It looks better too.

In the new version, open the TPL window and set Power Limit 4 to the maximum, 1023. Open the FIVR window and set IccMax for both the core and the cache to the maximum, 255.75. This can help get rid of some types of EDP OTHER throttling.

Someone has set the thermal throttling temperature of your laptop to 90°C instead of the full 100°C. I am not sure if you did this or if the manufacturer has done this. In the latest version of ThrottleStop, if you want to increase the thermal throttling temperature, open the Options window and change the PROCHOT Offset value from 10 to something less. The Intel default for this is 0. Many laptops set this to 2 or 3 so the CPU starts throttling at 98°C or 97°C. If you see a lock icon near this setting in the Options window, you will not be able to change this setting. Raising the throttling temperature will not hurt your CPU. Intel sets the throttling temperature to 100°C because they are quite confident that their CPUs can run reliably at these kind of temperatures.

If it was my laptop, I would redo the thermal paste. The 8750H has a 45W TDP rating. The CPU starts to thermal throttle when power consumption is barely over 30W due to poor cooling. Increasing the thermal throttling temperature if possible will help but improved cooling would help even more. Time for some maintenance.

The core and cache voltages do not have to be set equally. Reducing the cache offset voltage to -130 mV will probably let you increase the core offset voltage significantly. Here are some examples.

Cinebench Test.zip

drive.google.com

Use Cinebench R20 or R23 when testing different voltages.

MAXON Cinebench R20.0 Download

CINEBENCH is a real-world cross platform test suite that evaluates your computer's performance capabilities. CINEBENCH is based on MAXON's award-winn

www.techpowerup.com

 

[ARB2888]

Download ThrottleStop 9.4. The Turbo Power Limits window is new and improved. It looks better too.

In the new version, open the TPL window and set Power Limit 4 to the maximum, 1023. Open the FIVR window and set IccMax for both the core and the cache to the maximum, 255.75. This can help get rid of some types of EDP OTHER throttling.

Someone has set the thermal throttling temperature of your laptop to 90°C instead of the full 100°C. I am not sure if you did this or if the manufacturer has done this. In the latest version of ThrottleStop, if you want to increase the thermal throttling temperature, open the Options window and change the PROCHOT Offset value from 10 to something less. The Intel default for this is 0. Many laptops set this to 2 or 3 so the CPU starts throttling at 98°C or 97°C. If you see a lock icon near this setting in the Options window, you will not be able to change this setting. Raising the throttling temperature will not hurt your CPU. Intel sets the throttling temperature to 100°C because they are quite confident that their CPUs can run reliably at these kind of temperatures.

If it was my laptop, I would redo the thermal paste. The 8750H has a 45W TDP rating. The CPU starts to thermal throttle when power consumption is barely over 30W due to poor cooling. Increasing the thermal throttling temperature if possible will help but improved cooling would help even more. Time for some maintenance.

The core and cache voltages do not have to be set equally. Reducing the cache offset voltage to -130 mV will probably let you increase the core offset voltage significantly. Here are some examples.

Cinebench Test.zip

drive.google.com

Use Cinebench R20 or R23 when testing different voltages.

MAXON Cinebench R20.0 Download

CINEBENCH is a real-world cross platform test suite that evaluates your computer's performance capabilities. CINEBENCH is based on MAXON's award-winn

www.techpowerup.com

I entered the advanced BIOS and changed throttling temperature to 98°C. Also if you have suggestion to change anything in the setting in bios that is locked in throttlestop don't hesitate.

I am sill testing undervolting and I am now -170mv stable pc when using the laptop display and not stable (blue screen after the test is done error code WHEA_UNCORRECTABLE_ERROR) with external display and a Cinebench R20 score of 2637 with laptop 1080p display and score of 2540 with my 1440p external display , during the Cinebench tests using internal display the limit window in throttlestop both RING EDP other and CORE Thermal were red but after reaching approximately 80% of the test in CORE the Thermal goes to yellow and a new P1 is red until the end of the test, but using the external display only thermal and othe edp shows in red. Also when the laptop is idle RING EDP other is always in yellow even after clearing.



Here are my current settings and the log of all of my tests.

 

[unclewebb]

The log file you posted only contains 15 seconds worth of data when your CPU was mostly idle. When testing, delete the previous log file before you start testing. When finished testing, exit ThrottleStop so it can finalize your log file. Do not have the log file open when testing. ThrottleStop cannot write data to an open file.

EDP OTHER turning yellow only under the RING column can be ignored. Boxes turning red under the CORE column indicate throttling is in progress.

You are at the limit of your cooling. There is a little more performance to be had but only if you can find a way to improve your cooling.

Some computers automatically enable the Nvidia GPU when you are using an external display. This might cause stability to change when you switch between the laptop display and an external monitor. An active Nvidia GPU will create extra heat in your laptop.

PL1 is red until the end of the test

When PL1 goes red, have a look to see what power consumption ThrottleStop is reporting. You have set PL1 to 60W in the TPL window. Some laptops ignore this request and instead, they enforce PL1 equal to the TDP. The 8750H has a 45W TDP rating so some laptops are limited long term to 45W.

 

[unclewebb]

does it indicate that PL1 is set to 60w

Your screenshot shows that you are requesting 60W for the PL1 power limit and 90W for the PL2 power limit. Either you or the BIOS has set these two power limits to these values.

When running a stress test like Cinebench, watch the ThrottleStop Limit Reasons window and watch ThrottleStop to see what actual power consumption is. Some laptops will ignore the power limit values set in ThrottleStop. Some laptops use an embedded controller (EC) to enforce a 45W long term power limit. When you see PL1 or PL2 light up red in ThrottleStop, have a look to see what actual power consumption is. Are you seeing PL1 power limit throttling at 60W or 45W or some other number?

The first screenshot

Your CPU is only at 11W in your first screenshot. The CPU has to be fully loaded to determine anything.

 

[ARB2888]

Your screenshot shows that you are requesting 60W for the PL1 power limit and 90W for the PL2 power limit. Either you or the BIOS has set these two power limits to these values.

View attachment 226476

When running a stress test like Cinebench, watch the ThrottleStop Limit Reasons window and watch ThrottleStop to see what actual power consumption is. Some laptops will ignore the power limit values set in ThrottleStop. Some laptops use an embedded controller (EC) to enforce a 45W long term power limit. When you see PL1 or PL2 light up red in ThrottleStop, have a look to see what actual power consumption is. Are you seeing PL1 power limit throttling at 60W or 45W or some other number?


Your CPU is only at 11W in your first screenshot. The CPU has to be fully loaded to determine anything.

Look at the second test in the log file, also I scored 2591.

Also I have went through my bios and inside TDP Configuration there was a custom setting Nominal, if I set PL1 that value to 60 W and PL2 to 90 and configured TDP Boot to Nominal do you think this may do the trick?

This is a proper test.

Do you have any suggestion and thoughts?

I saw that the Package limit is 45W so do you think any of these settings could help?

 

[unclewebb]

The log file tells you everything you need to know.

   DATE       TIME    MULTI   C0%   CKMOD  BAT_mW  TEMP    VID   POWER
2021-11-24  22:55:00  34.71   99.7  100.0       0   98   0.9366   46.4   TEMP
2021-11-24  22:55:01  34.57   99.7  100.0       0   99   0.9623   46.3   TEMP
2021-11-24  22:55:02  34.61   99.7  100.0       0   98   0.9449   46.5   TEMP
2021-11-24  22:55:03  34.67   99.7  100.0       0   98   0.9410   46.7   TEMP
2021-11-24  22:55:04  34.64   99.7  100.0       0   98   0.9576   46.6   TEMP
2021-11-24  22:55:05  34.65   99.8  100.0       0   98   0.9368   46.6   TEMP
2021-11-24  22:55:06  34.62   99.8  100.0       0   98   0.9620   46.5   TEMP
2021-11-24  22:55:07  34.63   99.8  100.0       0   98   0.9408   46.4   TEMP
2021-11-24  22:55:08  34.68   99.7  100.0       0   98   0.9578   46.7   TEMP
2021-11-24  22:55:09  34.63   99.7  100.0       0   98   0.9358   46.5   TEMP
2021-11-24  22:55:10  34.47   99.8  100.0       0   96   0.9166   46.2   PL1
2021-11-24  22:55:11  34.18  100.0  100.0       0   97   0.9330   44.7   PL1
2021-11-24  22:55:12  34.20  100.0  100.0       0   97   0.9454   44.8   PL1
2021-11-24  22:55:13  34.18  100.0  100.0       0   96   0.9221   44.8   PL1
2021-11-24  22:55:14  34.21  100.0  100.0       0   96   0.9321   44.9   PL1
2021-11-24  22:55:15  34.20  100.0  100.0       0   96   0.9149   44.9   PL1
2021-11-24  22:55:16  34.19  100.0  100.0       0   96   0.9340   44.8   PL1
2021-11-24  22:55:17  34.24  100.0  100.0       0   96   0.9265   44.9   PL1
2021-11-24  22:55:18  34.20  100.0  100.0       0   96   0.9258   44.9   PL1
2021-11-24  22:55:19  34.18  100.0  100.0       0   96   0.9397   44.8   PL1

The first half of this log file shows TEMP which means your CPU is thermal throttling. The log file shows that it is running at 98°C or 99°C so that makes sense. It is throttling for a valid reason. Power consumption when this is happening is at just over 46W so that says that your cooling system cannot handle a 60W CPU. It is barely adequate to handle a 45W CPU.

Next up, this changes to PL1 power limit throttling. The reported power consumption is just a hair under 45W. That means the 60W power limit in ThrottleStop is being ignored. Like many laptops, your CPU is power limit throttling based on the 45W TDP. The CPU is being forced to slow down so it does not exceed 45W. It is difficult to go beyond this limit and even if you could, the cooling is not presently adequate for that.

I scored 2591

With proper cooling and no power limits, an 8750H should be over 3000 points in Cinebench R20.

There are typically no options in the BIOS to exceed the 45W power limit that the embedded controller (EC) is enforcing. You have to adjust IMON Slope so the CPU incorrectly reports less power consumption than what it is actually running at.

 

[ARB2888]

There are typically no options in the BIOS to exceed the 45W power limit that the embedded controller (EC) is enforcing. You have to adjust IMON Slope so the CPU incorrectly reports less power consumption than what it is actually running at.

I can see the IMON Slope in my bios, what should I set it to in my case?

I know it should be a negative number...

I can see the IMON Slope in my bios, what should I set it to in my case?

I know it should be a negative number...

 

[unclewebb]

There is no point in changing anything unless you can improve your cooling. Your CPU either power limit throttles or thermal throttles right around 45W.

I know it should be a negative number...

IMON Slope is usually between 0 and 100. I have zero hands on experience with this. Do some Google research to see what values other people use.

You can also try changing the slope to a different value and see what power consumption ThrottleStop reports when running a steady load like the TS Bench. Test using fewer threads if your cooling cannot handle a 12 thread TS Bench test. Typically reducing the IMON Slope reduces the reported power consumption so you get less or no power limit throttling.

 

[ARB2888]

There is no point in changing anything unless you can improve your cooling. Your CPU either power limit throttles or thermal throttles right around 45W.

I am aware of that and I will send my laptop Sunday for repaste and cleaning...
I also new have no pl problems and when configured with new fan curves I got a score 2679.

Thank you so much.

 

[Thrasher]

PLEASE I NEED HELP.
tengo windows 11, luego de una actualizacion comenzo a calentar demasiado, pero no noto ningun servicio y no es un virus, analice demasiado y soy muy cuidadoso, luego revise throttlestop y esta muy diferente a como lo habia dejado. al enceder pc y al jugar pasa los 94 grados cuando lo tenia totalmente controlado

 

[unclewebb]

throttlestop dead on windows 11

I installed the windows 11 insider preview, loaded up all the programs and games, but as i noticed it seems changing offset voltage no longer does anything and also some of readings are wrong (turbo ratio and memory freq) as seen here is there a workaround or microsoft added some stuff to...

www.techpowerup.com

You need to disable the Windows 11 virtualization features. Hyper-V, Virtual Machine Platform, Hypervisor, Core Isolation - Memory integrity, etc. After you disable this stuff, exit ThrottleStop and delete the ThrottleStop.INI configuration file before rebooting.

This means that you will not be able to use things like WSL2 in Windows 11 and ThrottleStop voltage control at the same time.

Post your questions in English. Use Google translate if you have to.

 

[Thrasher]

throttlestop dead on windows 11

I installed the windows 11 insider preview, loaded up all the programs and games, but as i noticed it seems changing offset voltage no longer does anything and also some of readings are wrong (turbo ratio and memory freq) as seen here is there a workaround or microsoft added some stuff to...

www.techpowerup.com

You need to disable the Windows 11 virtualization features. Hyper-V, Virtual Machine Platform, Hypervisor, Core Isolation - Memory integrity, etc. After you disable this stuff, exit ThrottleStop and delete the ThrottleStop.INI configuration file before rebooting.

This means that you will not be able to use things like WSL2 in Windows 11 and ThrottleStop voltage control at the same time.

Post your questions in English. Use Google translate if you have to.

genius, boss I was able to solve it, Disable-WindowsOptionalFeature -Online -FeatureName Microsoft-Hyper-V-Hypervisor

 

[Noirua]

Hello, new to the concept of undervolting and wanted some insight on my current setup. My laptop is a Lenovo Legion Y7000p-1060, type 81LF. The processor is an i7-8750H. I've had it for about 3 years now and never really thought to try undervolting because it performed pretty well (in my opinion, at least) but lately it began to struggle and after trying a multitude of different solutions I came to the idea of UVing because I noticed the CPU temp would spike all over the place while gaming and I assumed that it could be a case of severe throttling.

Following a simple guide on YouTube, and a little trial and error to figure out what amount of offset voltage will stop it from crashing, these are my current settings.

The CPU temps are much more stable and don't jump all over the place, however I can't help but feel I might be undershooting my CPU's performance capability. If any information is missing or if something else could be enhanced or altered, I'd like to learn more about it.

P.S. The temps shown on the main TS window are after I was running Lost Ark for about 2 hours.
P.S.S, figured it was worth including the current highest temp I have on record while gaming. This one is from Halo Infinite's Big Team Battle mode.

 

[unclewebb]

@Noirua
The 8750H has a 45W TDP rating. A properly engineered laptop should be able to run an 8750H at its full rated power indefinitely without overheating. Your CPU is reaching 88°C at only 24 Watts. When was the last time you did any maintenance to your laptop like disassembling it and cleaning out the heatsinks? If cleaning does not solve the problem then you should replace the thermal paste too. Not maintaining one's laptop is kind of like buying a car and never checking or changing the oil. It will work for a while but at some point it won't work anymore.

Reducing the power limits to 24W and reducing the turbo ratios to 34 is just covering up the problem. Fix the thermal problem.

 

[Noirua]

@Noirua
The 8750H has a 45W TDP rating. A properly engineered laptop should be able to run an 8750H at its full rated power indefinitely without overheating. Your CPU is reaching 88°C at only 24 Watts. When was the last time you did any maintenance to your laptop like disassembling it and cleaning out the heatsinks? If cleaning does not solve the problem then you should replace the thermal paste too. Not maintaining one's laptop is kind of like buying a car and never checking or changing the oil. It will work for a while but at some point it won't work anymore.

Reducing the power limits to 24W and reducing the turbo ratios to 34 is just covering up the problem. Fix the thermal problem.

Yeah, I thought as much. The temps had gradually risen over the past 2 years and it's not as though the hardware has changed. I can assume the thermal paste job just probably wasn't the best. I have cleaned the inside but never replaced the thermal paste for the CPU/GPU. I suppose I'll look into that then, thanks.

 

[Lawrence_phaw]

Yeah, I thought as much. The temps had gradually risen over the past 2 years and it's not as though the hardware has changed. I can assume the thermal paste job just probably wasn't the best. I have cleaned the inside but never replaced the thermal paste for the CPU/GPU. I suppose I'll look into that then, thanks.

Mine is Legion Y530, type 81 fv and same cpu. I think Legion y7000p is Chinese version of Y530.
If thermal pasting does not improve your cpu. Try these in Throttle Stop.
You better leave the Power Limit as default value. (i.e PL1 55w and PL2 90 w). Not 24s.
Then test the cpu performance in Cinebench.

Edit.
Cpu cache offset should start with -125mV. Then try lower voltage like -130, 135,140.. etc.. Or your PC will have crash.
Max temp for the below benchmark test is 83 c.