Product : Acer Helios 300 PH315-52 (with bios menu unlocked) CPU : i7-9750H base clock is 2.6GHz and Turbo boost is 4.5GHz my system is runing at 4.2 GHz on idle but as i start a game or stress test(aida64) my cpu clock speeds starts falling and goes below 2.1 ghz i have applied liquid metal on it and removed all the stock thermal paste,pads and putty on the cores i saw difference of -15 C and cpu is not thermals throttling but it does shows current limit throttling and PL2 i thought it must be the bios causing the problem so i got my bios advanced menu unlocked with the help of this fourm only but could not find anything in bios and don’t have much knowledge
Can you find the setting along the following path in your modified BIOS: Advanced -> Power & Perfomance -> CPU - Power Management Control -> View/Configure Turbo Options -> Power Limit 2?
Its value should definitely not exceed the capabilities of your power supply. I do not know how much your processor can consume in boost. It’s all up to you - try to add watts, increase the limit and test whether it has become better. In fact, it is quite dangerous.
i have this issue to, as soon as my bios was unlocked, my cpu started lowering its clock speed on idle. it has never done this before the bios was unlocked, so im unsure of how to resolve it and i have tried turning on and off things but couldnt fix it…
some this power limits controls EC fw on notebook "not react on your setup" - IMON for bypass NO LIMIT first determine BD-prochot ? critical for you _- HWINFO
TCC activation "8" ? 92C PROCHOT is here
EDP - VR setup "iccmax" current limit igpu - set lower / raise cpu on this system .,.but 0.9V and 90C ?? not ideal status !!!
// and basic “example” PL1 - some “sec” 28s / PL2 - some “ms” 2.5ms // PL3/PL4 + EC fw ?? your setup is 45W long period / 90W short period – works by your setup ?
bench ignore and setup your notebook in gaming ,…,real TDP 6cores no limit 150W
LM? here very carefully ! unless you use nickel-plated copper and new correct thermal pads is this problem !!! ,.and risk HWdefect
LM is very fast absorb on clean copper “first re-paste” is possitible will works only few days. and signals are corrected after EC reading “ignores fast spikes” until it’s late - shutdown limit or burned machine !
I often had a problem “shutdown limit” for 50-60C + random PROCHOT — dry zones in LM .,.,but my MSI has EC limit which does not damage the equipment !
but problem is most time invisible on LM ,.,.carefully you need any smart limit “when have 90C for 0.9V” or using bad pads or badly LM application
,…,real TDP 6cores no limit 150W 
