Throttlestop killing battery life

[spot123a]

I have throttlestop downloaded on my lenovo yoga 730ikb 4k i7-8550u 16gb ram laptop and i used it to boost my gaming performance. I undervolted the cpu, the cpu cache, and the igpu. However, i came to realize that instead of drawing the normal 6watts of power on battery when doing nothing it draws around 16 watts. What gives? I had to reset my laptop to get it to draw less power. The only things I did was undervolt the things mentioned above and I disabled and locked turbo power limits in the FIVR settings. I unchecked the disable and locked turbo power limits box and saved but it had no effect. Also deleting throttlestop.ini and shutting down had no effect either. (edited) The windows power profile was locked at 100% cpu activity. After changing this, the computer still draws too much power even with the processor at minimum state. Here is the throttlestop FIVR tab.

 

 

 

Edited February 7, 2019 by spot123a
More pictures

[Jurrunio]

enable speedshift epp, does that drop? If it still doesnt drop, set to 255 and it should go down

[unclewebb]

Try running CPUID HWMonitor and have a look at the CPU Cache power consumption.  Other users have reported that the high power consumption for some 8th Gen CPUs is mostly being caused by the on die cache memory.  Perhaps a recent microcode update designed to handle the Spectre Variant 2 bug is to blame.

 

I know something strange is going on.  It looks suspicious when Intel XTU no longer supports the 8th Gen low power U series.

https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU-?product=66427

 

Check out these two screenshots.

 

 

 

Two different 8750H CPUs, very similar load (C0%) but a huge difference in idle power consumption.  Why?  Same version of ThrottleStop.  If someone can come up with an explanation, I might believe that ThrottleStop is the problem.   Personally, I think the problem is with the CPU or the microcode version you are using.  If you open up the FIVR window, on the right hand side beside the Power Cut check box it will list what microcode version your CPU is using.  Maybe post that info here so users can start looking into this bug.

 

If your screenshot above was when your laptop was idle, you need to open up the Task Manger, click on the Details tab and click on the CPU column so you can find out what is running in the background on your computer.  That will help a little but there is definitely more going on here.  ThrottleStop reported C0% when idle should be around 0.5%.  Your cooling also needs to be improved because ThrottleStop shows that your CPU is hitting the 97°C thermal throttling (PROCHOT) temperature.

 

Edit - Also open up the C States window and make sure your CPU is using all of the low power C states that are available to it.

 

 

[spot123a]

On 2/6/2019 at 9:24 PM, unclewebb said:

Try running CPUID HWMonitor and have a look at the CPU Cache power consumption.  Other users have reported that the high power consumption for some 8th Gen CPUs is mostly being caused by the on die cache memory.  Perhaps a recent microcode update designed to handle the Spectre Variant 2 bug is to blame.

 

I know something strange is going on.  It looks suspicious when Intel XTU no longer supports the 8th Gen low power U series.

https://downloadcenter.intel.com/download/24075/Intel-Extreme-Tuning-Utility-Intel-XTU-?product=66427

 

Check out these two screenshots.

 

 

 

Two different 8750H CPUs, very similar load (C0%) but a huge difference in idle power consumption.  Why?  Same version of ThrottleStop.  If someone can come up with an explanation, I might believe that ThrottleStop is the problem.   Personally, I think the problem is with the CPU or the microcode version you are using.  If you open up the FIVR window, on the right hand side beside the Power Cut check box it will list what microcode version your CPU is using.  Maybe post that info here so users can start looking into this bug.

 

If your screenshot above was when your laptop was idle, you need to open up the Task Manger, click on the Details tab and click on the CPU column so you can find out what is running in the background on your computer.  That will help a little but there is definitely more going on here.  ThrottleStop reported C0% when idle should be around 0.5%.  Your cooling also needs to be improved because ThrottleStop shows that your CPU is hitting the 97°C thermal throttling (PROCHOT) temperature.

 

Edit - Also open up the C States window and make sure your CPU is using all of the low power C states that are available to it.

 

 

I posted all the stuff and updated the screenshots so they are not misleading.

[unclewebb]

Have a good look at the C State data you posted.  Your 4 cores are averaging only 64.5% in the low power C7 state.  The screenshot I posted shows that 2 cores can process all of the various Windows background tasks while averaging almost 99% of the time in C7. 

 

Same huge difference for Package C8. 92.5% vs 1.9%

 

You can not do any meaningful testing until you find out what is running on your computer.  Start closing some background tasks.  The bloatware on your system will kill battery run time and reduce overall performance.

 

I recommend learning how to use Autoruns from Microsoft.

https://docs.microsoft.com/en-us/sysinternals/downloads/autoruns