Windows 10: Aug./Sept. Win 10 update changes CPU voltage and core clock speeds to max when the active...

Hello,Prior to the August/September windows updates my CPU ran normally around 1.00Volts and 3300Mhz to 3500Mhz core clock speed across all applications including games. With the August and September windows update KB500556 and KB4023057When the active window is a game, whether it be a Steam game or Epic Games the voltage on the CPU instantly goes to a max 1.49 Volts and core clock speed to 4900+ also increasing CPU temps by 20C. When making any other window active, instantly CPU temp, voltage, and core clock go back to normal. This is while in a menu of a game, and not actual game play.

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Windows 10 only use half of max cpu speed

one thing I found out recently, is that win10 disables software based core parking by default. under windows 7 it was enabled on my laptop. when core parking is enabled, the cpu is able to reach it's max rated turbo boosted speed because the other cores
are not being used. On my system 1 core gives 2.8ghz max speed, additional active cores give a lower turboboost ratio. I suspect this isn't an issue for those with the latest and greatest CPU's as the intel specification now calls for hardware based core parking.
I managed to re-enable core parking using bitsums' park control software. the park control software is also built into bitsum's process lasso software.

 

Dell G3 Speedstep not working?

The core clock frequencies and voltage on my Dell G3 are locked at full speed and max voltage. Speed Step/C-States are enabled in the BIOS, I'm using the balanced power plan in Windows (min CPU 5%, max CPU 100%) and there is no abnormally high CPU load. I'm confused... *Confused

Edit: The power cord plugged in was keeping the clocks at full speed. There must be some Dell specific power settings I'm missing.

 

Intel Core i7-4770K - healthy core speed

A High-Performance power profile in windows will keep the stepping up high on the processor, instead of it idling and lowering in clock and voltage. Nothing wrong with using that setting, but usually the stepping is so fast this is not nessisary.

The Item in the power properties that keeps the frequency high in the High Performance profile is in the "advanced power settings"
Processor power management , Minimum processor state 100%
You could adjust that one item to 0%-100% as desired , like 0-5% would allow the processor to step down when idleing.

By customising a High Performance profile all the rest of the things will stay high (often also unnessisary) , and the processor will be allowed then to step.

The processor being in turbo, is usually because only one "core" is required to do the minimal tasks , even though just the OS itself will use multiple cores/threads to do even simple tasks. You could check all that in the resource monitor , where a Core not being used at the moment might read "parked" . In the CPU section , look at the Graphs.

Beyond that , and likely from what your saying, an overclocking board , or other boards capable of playing with all this turbo stuff, and K processors , can easily turbo all the cores , when turbo kicks in. They can also adjust the turbo speeds different for 1,2,3,4 cores being used at the time. So it is also possible to have your computer pushed into or locked into a turbo even when using all 4 cores (or minimally using none), via the Motherboards bios settings, and the Operating systems power settings.

Using these methods and multiple power profiles, I can lock the CPU to always turbo overclocked, or never turbo (99% maximum processor state), or all the way down to green (lower max, passive cooling). My extreeme profile (100% minimum processor state) does keep the cpu clock at the highest turbo levels. I rarely would use that profile, because in the more balanced profiles it will happily idle, and turbo without any noticable performance losses.

There is again nothing wrong with it staying high, or staying in turbo, even if it is not being used, it really does not use that much more power, it is processing "Work" that uses the most power, staying high only uses slightly more power than being allowed to fully idle.

There is certannly nothing wrong (also) with adjusting it (in both) so it can idle and cool out and use less power.

So you can control most of that, or just leave it. If there would be a problem from it, it would be if the computer is not stable at those clocks and voltages, or the temperatures are too high for the cooling setup.

Other stuff:

If the question is about actual processing activity , programs running, windows doing stuff in the background, and endless use of the cores, that keeps the processor up, that would be different.

The array of adjustments in motherboard Bios/uefi is not covered, because it is different in each one, and the number of adjustments seemingly endless, a "guide" for your particular motherboard could be used to explore the possibilities there.

It is possible to disable intel stepping , and standby states, and all that at the motherboard, then some of the adjustments in the OS will not work as expected.