If you are going to undervolt the Intel GPU, you need to also under volt the iGPU Unslice equally. This might help to increase the turbo power limits but long term, it is likely that you will still be limited to 15W or whatever your laptop is limiting you to. You can try checking the TDP Level Control option. Leave the turbo ratio limits set to their default values, 39, 38, 37, 37. This is a locked CPU so you cannot overclock it. Leave the turbo time limit at the default value which is 28 seconds.

When using Speed Shift, the older Set Multiplier function is not used so do not check the Set Multiplier box either. Your laptop has Speed Shift enabled (SST in green). Clock modulation throttling is the old school method. Most newer laptops use power limit throttling. There is no reason to check the Clock Modulation box in ThrottleStop unless a log file indicates that your laptop is using this throttling method. Once locked, no other software will be able to touch it until the next reboot. ThrottleStop is more efficient if it does not have to keep checking this register for any changes. When you find an offset value you like, use the Lock PROCHOT Offset feature. Thanks for testing ThrottleStop's new PROCHOT Offset feature. Definitely need to avoid VR THERMAL throttling. This might be a way to run your CPU a little cooler so the voltage regulators do not puke. Some users continue to see improvements with the core as low as -200 mV. Now see if you can drop only the CPU core offset lower. When testing with Cinebench R20, try backing off your cache offset from -127.9 mV to maybe -110 mV or -100 mV. When undervolting these CPUs, the cache voltage is the limiting factor. During testing, the engineers likely saw that their voltage regulator cooling was crap so rather than spend some money, they got cowardly and chose the free solution. Click to expand.No easy way around this problem without doing some cooling mods.

Clock modulation quick cpu