Why doesent CPU go back into turbo?

[TacomaToker]

Sorry if this question doesn’t make sense. When running Cinebench R23, the CPU runs at turbo for what seems to be a random amount of time. Usually about 1min 20sec. At turbo all cores are running at 4.3mhz. The red POWER notice pops up on TS, and once turbo disengages, the cores drop to about 4.1 MHz. It stays at this clock speed for the rest of the 10 minute test. TS doesent show any temp throttling, and it’s not getting hotter than 89c. It will not temp throttle until 95c. Why is the turbo disengaging if it’s not getting too hot?

Below are my TS settings. I’ve tried cranking up the turbo time limit to 512 but the turbo still disengages at the same time. I’m not totally sure what I’m doing, so any advice is appreciated.


https://imgur.com/a/OpbmuY2

 

[Toothless]

I really hope you mean ghz, not mhz.

Processors have an "all core" turbo which means if X cores are loaded, x speed will be set. Less cores active = higher turbo.

 

[unclewebb]

The processor base frequency for the 10750H is 2.60 GHz.

Intel® Core™ i7-10750H Processor (12M Cache, up to 5.00 GHz) Product Specifications

Intel® Core™ i7-10750H Processor (12M Cache, up to 5.00 GHz) quick reference guide including specifications, features, pricing, compatibility, design documentation, ordering codes, spec codes and more.

ark.intel.com

Any speed higher than that means that turbo boost must be enabled.

Post a screenshot of ThrottleStop with Limit Reasons open when your CPU starts to slow down while running Cinebench R23.

I really hope you mean ghz, not mhz.

4.1 MHz would definitely be some extreme throttling. My old Amiga runs faster than that!

 

[yotano211]

I've played around with a laptop with a i7 10750h for a few weeks, msi ge75. I put liquid metal compound for higher speeds and lower temps, it ran at 4.3ghz all core 100%. Before that it was around 4.0ghz. The reason yours dropped is because the temps are getting higher so the laptop tries to drop speed to stay cooler.

 

[unclewebb]

the temps are getting higher

He says Power is lighting up so it is power limit throttling. Some laptops enforce a power limit that ThrottleStop cannot override.

 

[TacomaToker]

The processor base frequency for the 10750H is 2.60 GHz.

Intel® Core™ i7-10750H Processor (12M Cache, up to 5.00 GHz) Product Specifications

Intel® Core™ i7-10750H Processor (12M Cache, up to 5.00 GHz) quick reference guide including specifications, features, pricing, compatibility, design documentation, ordering codes, spec codes and more.

ark.intel.com

Any speed higher than that means that turbo boost must be enabled.

Post a screenshot of ThrottleStop with Limit Reasons open when your CPU starts to slow down while running Cinebench R23.


4.1 MHz would definitely be some extreme throttling. My old Amiga runs faster than that!

Gotcha. I didn’t realize that anything above stock speeds is turbo. Lot to learn here!

Nothing pops up in limit reasons, it’s blank and always has been. The CPU is heating up slowly, but it’s not even getting up to 90 degrees before I see the POWER notification pop up. That’s all I see and the CPU immediately throttle down to 4.0-4.1.

Another thing Ill add is that it ramps back up to 4.3 ghz in between the Cinebench image renders. Even at 82c, it pops back up to 4.3 for a mere second, then back to 4.1. It only stays at 4.3 at the very start, the first image render. If that makes sense.

 

[yotano211]

Sorry if this question doesn’t make sense. When running Cinebench R23, the CPU runs at turbo for what seems to be a random amount of time. Usually about 1min 20sec. At turbo all cores are running at 4.3mhz. The red POWER notice pops up on TS, and once turbo disengages, the cores drop to about 4.1 MHz. It stays at this clock speed for the rest of the 10 minute test. TS doesent show any temp throttling, and it’s not getting hotter than 89c. It will not temp throttle until 95c. Why is the turbo disengaging if it’s not getting too hot?

Below are my TS settings. I’ve tried cranking up the turbo time limit to 512 but the turbo still disengages at the same time. I’m not totally sure what I’m doing, so any advice is appreciated.


https://imgur.com/a/OpbmuY2

What laptop model do you have?

 

[TacomaToker]

What laptop model do you have?

It's an MSI Gl75. Its possible there is something detecting that the temperature is creeping up, but its actually pretty stable at 90 degrees. It shouldnt be throttling until 95, right?

The processor base frequency for the 10750H is 2.60 GHz.

Intel® Core™ i7-10750H Processor (12M Cache, up to 5.00 GHz) Product Specifications

Intel® Core™ i7-10750H Processor (12M Cache, up to 5.00 GHz) quick reference guide including specifications, features, pricing, compatibility, design documentation, ordering codes, spec codes and more.

ark.intel.com

Any speed higher than that means that turbo boost must be enabled.

Post a screenshot of ThrottleStop with Limit Reasons open when your CPU starts to slow down while running Cinebench R23.


4.1 MHz would definitely be some extreme throttling. My old Amiga runs faster than that!

Here is a pic at the start of the test. It stayed at this clock speed for 1 minute 40 seconds. Reached 90 degrees.

At 1:40 it throttles down to this, and stays there for the rest of the 10 minute test. It pops back up to 4.3 for about 1 second each time it starts to render a new image, but immediately drops back to 4.1.

 

[yotano211]

Nothing comes up for msi gi75.

 

[unclewebb]

There was a bug where Limit Reasons was not reporting anything when running on 10th Gen CPUs. This bug has been fixed. I will send you a message with a link to an updated version.

It is definitely power limit throttling, right at 65W. I would not be surprised if your laptop enforces this long term power limit.

Have you tried going up towards -200 mV for the core offset? If you can find a way to reduce power consumption, you might be able to stay in full turbo longer.

 

[TacomaToker]

There was a bug where Limit Reasons was not reporting anything when running on 10th Gen CPUs. This bug has been fixed. I will send you a message with a link to an updated version.

It is definitely power limit throttling, right at 65W. I would not be surprised if your laptop enforces this long term power limit.

Have you tried going up towards -200 mV for the core offset? If you can find a way to reduce power consumption, you might be able to stay in full turbo longer.

I just tried -202, very good results! It stayed in full turbo for over 3 minutes, over twice as long as before. When it power throttled down, it only dropped to about 42.5-42.8 from 4.3. Much better than dropping to 4.0-4.1 at -125. In addition, I skirted the line of temperature throttling with a max temp of 93 on the 10 minute test. No temp throttling. My Cinebench score is 8093, with 6c/12t at 2.6ghz. Right below the 12c/24t at 2.7ghz with a score of 8378. Should I keep trying for more or is it not gonna be get much better than this?

Nothing comes up for msi gi75.

GL75, sorry.

 

[yotano211]

I just tried -202, very good results! It stayed in full turbo for over 3 minutes, over twice as long as before. When it power throttled down, it only dropped to about 42.5-42.8 from 4.3. Much better than dropping to 4.0-4.1 at -125. In addition, I skirted the line of temperature throttling with a max temp of 93 on the 10 minute test. No temp throttling. My Cinebench score is 8093, with 6c/12t at 2.6ghz. Right below the 12c/24t at 2.7ghz with a score of 8378. Should I keep trying for more or is it not gonna be get much better than this?
10th gen intel procssor don't undervolt very well.



GL75, sorry.

Only way to get higher is to use liquid metal thermal compound. I used cool labotory liquid ultra and thermal tape around the processor.
I was getting 4.3ghz at 100% running Boinc with a .075 to .085 undervolt using Intel xtu. Temps where staying at 89c to 91c.

This is the step that will show the advanced BIOS.

Press delete at startup to enter Bios, At the BIOS screen Hold ALT, Hold Right Control, Hold Shift, And Press F2 while holding those 3 buttons, Advanced Menu will show up.
From there you can go into the processor setting menu and undervolt and other things. You can also overclock the RAM.

 

[unclewebb]

just tried -202

If -200 mV is good, -220 mV might be better.

 

[yotano211]

If -200 mV is good, -220 mV might be better.

There is no way that a 10th gen can undervolt to -.220mv. Everyone who have undervolted the 10th gen on laptop cant seem to undervolt them or they dont undervolt that much vs 8th or 9th gen. I can vouch for that, I've had or tested out 8th, 9th, and 10th gen laptops. My current laptop is 9th gen.
But I use Intel XTU to undervolt, not throttleStop.

 

[TacomaToker]

There is no way that a 10th gen can undervolt to -.220mv. Everyone who have undervolted the 10th gen on laptop cant seem to undervolt them or they dont undervolt that much vs 8th or 9th gen. I can vouch for that, I've had or tested out 8th, 9th, and 10th gen laptops. My current laptop is 9th gen.
But I use Intel XTU to undervolt, not throttleStop.

I can vouch that my 10th gen is running better than ever at -202.

 

[yotano211]

I can vouch that my 10th gen is running better than ever at -202.

Maybe the volt settings are different with throttlestop vs intel XTU.

 

[unclewebb]

Maybe the volt settings are different with throttlestop vs intel XTU.

The difference is that Intel XTU forces you to undervolt the core and cache equally. ThrottleStop does not have this limitation and lets you adjust these two voltages individually. Intel CPUs have two separate registers for these voltages. No need to set them equally.

The cache offset is always the limiting factor, even more so in the 10th Gen 10750H. By not being forced to adjust the cache, the core can be adjusted way further. During testing, this has proven to make a significant difference to either performance or temperatures or sometimes both.

The 8th and 9th Gen mobile CPUs were the same. Anyone serious about maximizing performance ditched XTU a long time ago.

Cinebench R20

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

R20 and R23 heavily use the AVX instructions. Its repeatable results will clearly show the advantage to setting the core and cache voltages individually.

 

[yotano211]

The difference is that Intel XTU forces you to undervolt the core and cache equally. ThrottleStop does not have this limitation and lets you adjust these two voltages individually. Intel CPUs have two separate registers for these voltages. No need to set them equally.

The cache offset is always the limiting factor, even more so in the 10th Gen 10750H. By not being forced to adjust the cache, the core can be adjusted way further. During testing, this has proven to make a significant difference to either performance or temperatures or sometimes both.

The 8th and 9th Gen mobile CPUs were the same. Anyone serious about maximizing performance ditched XTU a long time ago.

Cinebench R20

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

R20 and R23 heavily use the AVX instructions. Its repeatable results will clearly show the advantage to setting the core and cache voltages individually.

Oh never knew that, I'm going to need to try it out. I am limited by the undervolt of -.105v on this i9.