How have you set power plan in Windows? Window's power plans can influence cpu power states.
I use the Ultimate Performance power plan.
The cpu steps according to load and core usage. Base speed is 3.6GHz. You'll rarely ever see that with turbo enabled because as soon as you get a 25-30% load on the cpu it sets turbo to max performance. You'll get a 40-50% load just opening up any program.
If you only use 1 core working, then turbo will step to 4.9GHz. If 2-3working cores its 4.8GHz, 4-5 cores is 4.7GHz and 6-8 cores is 4.6GHz. The cpu does this to maintain balanced temps across core usage, if turbo is set to lock all cores, you'd see massive heat output at 4.9GHz, basically an OC value
Using performance plans will keep your cpu boost frequency higher. Try balance if it bothers you.
Should You Use the Balanced, Power Saver, or High Performance Power Plan on Windows?
Windows sets all PCs to a "Balanced" power plan by default.www.howtogeek.com
If temps are good i wouldn't worry about it. Electricity use would roughly be $50 annually.
Im not sure why in the bios you're still seeing high speeds. Im wondering if c states are temporarily disabled while in the bios to prevent stability of motherboard devices powering down? Hopefully someone else can clarify.
Look for unclewebb's post towards the end on his take what may be happening.
Intel i7 9700k Constant Turbo Boost in bios
Hello everyone!I've recently upgraded from 5820k to 9700k and was suprised to find out that the CPU is running at between 4600Mhz boost clock in BIOS and windows. As you can probably tell, there isn't much load on the CPU in bios, but somehow, it still thinks it needs the boost. Motherboard is Gy...linustechtips.com
Guessing if that is the case, if power plan in Windows is set to balance with nothing major running does cpu frequency drop?
Dont forget to make sure enhanced turbo and or multicore enhancement is turned off or you will see your cpu running at the max almost all the time.
It's bios. There is no power plan, no idle, no c-states no nothing. In bios. Bios does not conform to Windows settings for power plans etc because Windows is not loaded, not functional at that point. But it will conform to its own settings, and will run at appropriate speeds for what the cpu is using. There's a difference in what the actual speed of the cpu is currently in bios and what it's capable of.
So when you are in bios, looking at bios values, you get bios regulated settings. When finish booting (bios is an interrupt of the boot process, so holds a certain load temporarily) the pc now responds to the OS values set by the power plan, eco settings or other variable settings.
If you allow a modern CPU to crunch SETI units, fold/crunch data, etc., it will burn thru $50 extra monthly....Using performance plans will keep your cpu boost frequency higher. Try balance if it bothers you.
Should You Use the Balanced, Power Saver, or High Performance Power Plan on Windows?
Windows sets all PCs to a "Balanced" power plan by default.www.howtogeek.com
If temps are good i wouldn't worry about it. Electricity use would roughly be $50 annually.