Question My laptop's CPU is missing 200MHz at full power

[chipimaurino]

Hey everyone, I recently did a a few tests with my gaming laptop (MSI GL63 8SE) as it had cooling issues. Those are fixed but as I tested I noticed that even with P95 pushing the CPU to max load it never ever went past 1995Mhz, which is a good 205Mhz short of the 2.2GHz its supposed to pull. Of course, Im not expecting it to get exactly there but 200 MHz is quite a bit of power to be missing but...
I was wondering if there is an easy fix to the ratio? The bios for the laptop is of course shit and its missing most of the options which is also an issue, I dont know how to fix that one if its needed .
Attached (I hope, since insert image doesnt work with imgur?) is a screenshot of HWinfo during the most recent Prime95 torture test.

https://imgur.com/a/ztrdrVJ

 

[Misgar]

Since you're running all cores at near 100%, the CPU might not have sufficient cooling to run at 2200MHz all-core and thermal limiting has down clocked the speed to 2GHz.

Laptop design is a compromise between size, weight and cooling. On a desktop PC you could fit a larger cooler. On a laptop you're stuck.

 

[uWebb429]

@chipimaurino

The 8750H can run Cinebench at a steady 3900 MHz if it is well cooled and the turbo power limits are set appropriately.

Prime95 will overwhelm most laptops. Look at the limit reasons data in HWINFO and it will tell you the reason for throttling.

Learn to use ThrottleStop. Post screenshots of the FIVR and TPL windows if you need help.

 

[chipimaurino]

Since you're running all cores at near 100%, the CPU might not have sufficient cooling to run at 2200MHz all-core and thermal limiting has down clocked the speed to 2GHz.

Laptop design is a compromise between size, weight and cooling. On a desktop PC you could fit a larger cooler. On a laptop you're stuck.

It is not a cooling issue, it is stable at around 70 C and HWinfo says its not throttled.

@chipimaurino

The 8750H can run Cinebench at a steady 3900 MHz if it is well cooled and the turbo power limits are set appropriately.

Prime95 will overwhelm most laptops. Look at the limit reasons data in HWINFO and it will tell you the reason for throttling.

Learn to use ThrottleStop. Post screenshots of the FIVR and TPL windows if you need help.

https://imgur.com/6r8s7zB

It just says it isnt limited or throttled... Even Prime95 cant get it past 70C after the cooling upgrades and the cooling fan I got. So, about those turbo power limits, where are they set or where can I check them?

 

[uWebb429]

It just says it isnt limited or throttled...

Your 8750H is definitely being limited. Try using ThrottleStop. Post screenshots of the main window, the FIVR and TPL windows. Run a more realistic stress test like Cinebench R23 and take screenshots of ThrottleStop while the CPU is loaded with that. Cinebench is a consistent stress test that will provide you with a score that can easily be compared to other users with the same CPU.

ThrottleStop 9.6 Download

ThrottleStop is a small application designed to monitor for and correct the three main types of CPU throttling that are being used on many lapto

www.techpowerup.com

https://www.techspot.com/downloads/7579-cinebench-r23.html

2200 MHz is the base frequency when Intel Turbo Boost is disabled. Uninstall any MSI software until you get this problem figured out. The MSI Control Center has a reputation of being a bug filled mess.

If it is not that then it is either the BIOS or Windows that is not setting your CPU up correctly. Post some ThrottleStop screenshots and I will be able to help you get this figured out. Open the ThrottleStop Limit Reasons window and look under the CORE column for any boxes lighting up red while the CPU is loaded. That would indicate throttling.

 

[Misgar]

When I checked the ThrottleStop link (thanks @uWebb429 for that) I noticed this:

Some laptops are using clock modulation and multiplier reductions to lower the performance and power consumption of your computer. This is done deliberately to either allow your computer to run cooler or to allow your laptop to operate with a power adapter that is not sufficient to fully power your laptop and recharge its battery at the same time.

I've seen reviews of laptops and low power NUCs where the manufacturer deliberately limits the power consumed by the CPU, to extend battery life or reduce heat/running costs. It's just possible MSI have restricted the performance of the GL63 8SE for similar reasons. A bit like de-tuning a vehicle engine for use in California.

Good luck with your ThrottleStop experiments.

 

[uWebb429]

The GL63 series includes a 180W power adapter.

https://www.msi.com/Laptop/GL63-8SX/Specification

If the original MSI power adapter is being used, there is no reason for the CPU to be running so slow. Extending battery life might be a legit reason when running on battery power. It is not a legit reason for throttling when plugged in.

An 8750H should easily be able to run at 3900 MHz not 2000 MHz. Intel CPUs are designed to use full turbo boost and run as fast as possible when plugged in.

 

[chipimaurino]

+Your 8750H is definitely being limited. Try using ThrottleStop. Post screenshots of the main window, the FIVR and TPL windows. Run a more realistic stress test like Cinebench R23 and take screenshots of ThrottleStop while the CPU is loaded with that. Cinebench is a consistent stress test that will provide you with a score that can easily be compared to other users with the same CPU.

ThrottleStop 9.6 Download

ThrottleStop is a small application designed to monitor for and correct the three main types of CPU throttling that are being used on many lapto

www.techpowerup.com

https://www.techspot.com/downloads/7579-cinebench-r23.html

2200 MHz is the base frequency when Intel Turbo Boost is disabled. Uninstall any MSI software until you get this problem figured out. The MSI Control Center has a reputation of being a bug filled mess.

If it is not that then it is either the BIOS or Windows that is not setting your CPU up correctly. Post some ThrottleStop screenshots and I will be able to help you get this figured out. Open the ThrottleStop Limit Reasons window and look under the CORE column for any boxes lighting up red while the CPU is loaded. That would indicate throttling.

Aight, Ive done all the things and there is indeed throttling as you said.
Here is the Main ThrottleStop window, FIVR and TPL before Cinebench:

https://imgur.com/4iRRhi6

https://imgur.com/obn05O7

https://imgur.com/zDmomZX

Then, here is during the Cinebench test (+plus the limits screen) and the cinebench test result:

https://imgur.com/MQBbnl3

https://imgur.com/tMpy8BJ

I would really appreciate your help with this one cause ThrottleStop is one of those programs where I dont dare touch anything to experiment at all.

I did notice it run at 2.7GHz according to ThrottleStop during the test but thats still around 1 GHz short...