Windows 10: CPU locked at base clock after upgrading to Windows 11

Hi all,I am using i7-8750h as my processor and used Windows 10 for years, had a similar problem occurring time to time in Windows 10What happened when using Windows 10:- CPU would get stuck at 0.79 GHZ- I would unplug my laptop and it would stabilize itself on battery and exceed this threshold and I would plug it back again, everything is solvedWhat happens when using Windows 11:- CPU clock gets fixed at 2.20 GHZ which is the base clock of the i7-8750h- If I unplug it, clock starts to wary between 0.79 GHZ and 2.20 GHZ but never exceeding it- If I plug it back in, it is still fixed at 2.20 G

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CPU Clock speed locked at 0.79GHz

Hi, I have an i7-4500U CPU and for the last few months my system starts at full speed (2.39GHz) but as soon as the CPU goes below 30% utilisation after startup, the system locks the clock speed to 0.79GHz even when the fan is off. The CPU temperature is
around the 50degree C mark, therefore should be allowing the processor to go up to full clock speed.

I've changed the power settings to set the minimum clock speed to 50%, but that has made no difference.

 

Autothrottle CPU based on usage

Intel Extreme Tuning Utility (XTU) can be used to control clock rates, including reducing the maximum clock rate when more cores are in use.

• The Core i5-4690K has unlocked clock multipliers. Although this is usually used to overclock the CPU, this feature can also be used to limit the processor's clock speed as needed.
  
• Intel XTU can be used to reduce the maximum clock multipliers when more cores are in use. This can be used to mitigate overheating while not limiting single-thread performance. I'd suggest starting by setting the multipliers to 43/40/37/35 (1 to 4 active cores), and adjusting from there as needed.
  
• Alternatively, you can undervolt the processor to reduce power consumption heat output, especially in conjunction with reducing the clock multipliers. Doing this can introduce instability similar to that caused by overclocking, so you may need to experiment with the controls to obtain stable results. When done correctly, this can dramatically reduce processor temperatures.
  

Make sure the cooler is properly installed. If that doesn't help, you should consider replacing the thermal paste or CPU cooler.

• The real cause of the issues you're encountering is that the CPU cooler isn't able to remove enough heat from the processor. When properly cooled, a CPU should never overheat under load. An improperly installed cooler can significantly reduce cooling performance, resulting in excessive temperatures. Be sure the cooler is firmly attached and that there is thermal paste between the cooler and processor package.
  
• If that doesn't help, you'll need to upgrade the thermal solution. Changes as minor as replacing the thermal paste can significantly improve cooling capacity and prevent overheating. There are also many third-party CPU coolers available, ranging from large, high-performance air coolers to advanced liquid cooling systems.
  

 

Cpu replacement

Does the laptop have an I3 2330M CPU now? If so, the I7 2640M is epecified with the same TDP: 35W. Battery life should not be any worse with the I7.

I question whether it'd be a major upgrade, though. The I3 has 2 cores /4 threads, with a base clock of 2.20GHz. The I7 also has 2 cores /4 threads, and a base clock of 2.80GHz. Maybe there's more to it than that (like instructions per clock), but it's not encouraging.

If the OP decides to proceed anyway, I suggest making sure that the laptop's BIOS is up-to-date.