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My I7-9750H Never Hits Full Turbo Clock Speed

Spare15

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I recently purchased a Lenovo Y545 with a 9750h. Lenovo already overclocked it to the processor's max turbo ratio at a value of 45x. In games where a full processor load is necessary, the CPU only boosts up to about 4.2 Ghz. It never hits 4.5 Ghz. I did use throttlestop to lower my CPU core voltage and CPU cache voltage to -140.6mV each. I've tried updating the BIOS, and tried setting speedstep to a value of 0.

133795

All cores are already maxed out at a 45x multiplier.
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Here are the settings I currently have on throttlestop.
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And finally, my FIVR settings.
 
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Have you checked your temps while playing the games? If you aren't hitting max Turbo, I'd guess that you are hitting the thermal limits for the processor.
 

FreedomEclipse

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Do you use a laptop cooler of any sort? Even if you dont have one just use a book or anything to prop up the back of the laptop a little to give the fans some air to breath.

you can always go a step further and re-apply thermal paste to something better. MX-4, NT-H1, Kryonaut - even AS5 and LM but you have to be careful how you apply those and take the necessary precautions .
 

Spare15

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Have you checked your temps while playing the games? If you aren't hitting max Turbo, I'd guess that you are hitting the thermal limits for the processor.
Do you use a laptop cooler of any sort? Even if you dont have one just use a book or anything to prop up the back of the laptop a little to give the fans some air to breath.

you can always go a step further and re-apply thermal paste to something better. MX-4, NT-H1, Kryonaut - even AS5 and LM but you have to be careful how you apply those and take the necessary precautions .
Temps aren't a problem, I usually hit 86c on more intensive games, and mid to high 70's on less intensive ones. Even right now, with my speedstep at 0, and my temps at 50c, its sitting right at 4.2Ghz. I don't think its thermal throttling, I used to have an ASUS GL, that laptop would overheat quite often and throttle down to the 1.2Ghz range.
 
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Also, from what I'm seeing, if your work load is utilizing all cores then you will not hit 4.5ghz. The max all core turbo for that chip appears to be 4.0ghz. You can try to find a benchmark that will work just a single core and see what that does.
 

eidairaman1

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Thermals are limiting factor in any laptop along with the power brick size
 
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Temps aren't a problem, I usually hit 86c on more intensive games, and mid to high 70's on less intensive ones. Even right now, with my speedstep at 0, and my temps at 50c, its sitting right at 4.2Ghz. I don't think its thermal throttling, I used to have an ASUS GL, that laptop would overheat quite often and throttle down to the 1.2Ghz range.
75~85C is already high enough. Its not throttle temps but the processor from a certain temp and up always is trying to prevent hitting the throttling trigger by adjusting(reducing) clock/voltage.
At this point if you want more clock you can try to cool the laptop better, if there is any way.
 
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Probably power or thermal throttling, consider yourself lucky with 4.2 as most chips are locked to 4 if that.
 

Spare15

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75~85C is already high enough. Its not throttle temps but the processor from a certain temp and up always is trying to prevent hitting the throttling trigger by adjusting(reducing) clock/voltage.
At this point if you want more clock you can try to cool the laptop better, if there is any way.
I have some Mx-4 on hand so I might do a repaste. So what your saying is that the CPU is adjusting it's clock in order to stay in boost as long as possible without just instantly hitting it's determined throttle temp?
Also, from what I'm seeing, if your work load is utilizing all cores then you will not hit 4.5ghz. The max all core turbo for that chip appears to be 4.0ghz. You can try to find a benchmark that will work just a single core and see what that does.
I'll try seeing what one core alone can put out. I also found a tutorial on core parking, I might try it out, I don't think I'd need all 6 running at the same time.
 

unclewebb

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This is not a K CPU so it does not support all core turbo. If you are using ThrottleStop, the Turbo Ratio Limits should be set to 45, 44, 43, 42, 41, 40 from top to bottom. When 6 cores are active, 40 is the maximum multiplier. Having these all set to 45 will be ignored by the CPU.

In the FIVR section, I recommend installing the necessary driver and using the Disable and Lock Turbo Power Limits feature.

Your XTU screenshot shows that the Turbo Boost Power Max is set to 20 Watts. That is a big mistake. For maximum performance you need this up over 60 Watts. The turbo boost short power max should be higher still. These can both be adjusted in ThrottleStop. The Disable and Lock feature will help to keep these at their recommended values and will prevent Windows or other software from making any unwanted changes.

Close as many apps as possible and only have ThrottleStop open on the desktop. Try running a 1 Thread TS Bench test. You should see a high multiplier during this test. There are always hundreds of Windows tasks running in the background, waking up additional cores so you will never see the full 45 multiplier for any length of time. If you have a lean system without a lot of background clutter, you might get pretty close to 45 during this test.

Its not throttle temps but the processor from a certain temp and up always is trying to prevent hitting the throttling trigger by adjusting(reducing) clock/voltage.
That statement is not true at all. Do some high temperature testing. Intel CPUs will happily run right up to the thermal throttling temperature without a hint of throttling. They will not slow down 1 MHz until they hit the thermal throttling temperature. Intel CPUs run just fine even when they are as hot as hell. Here is Prime95 warming up the CPU cores and Furmark warming up the Intel GPU. Neither one is throttling yet.

 
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I am not familiar with throttlestop app.
And for sure I don’t like to see my CPU hitting 80 or 100C during workload.

Feel free to work your hardware as you like...
 

Spare15

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Thank you unclewebb, I did some tweaking with the "Disable and Lock Turbo Power Limits". I also parked some cores through "Processor Power Management". I am now hitting around the 4.3-4.5 Ghz range.
 
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