Add real-time frequency of the CPU as a whole.

[jntdofe]

Is there an existing issue for this?

• I have searched the existing issues

Is your feature request related to a problem? Please describe.

Currently it's very annoying to check if power modes are working correctly on a notebook without having a unified real-time CPU frequency meter of the whole processor and I'm sure it will also be useful for other people with other needs, it's the only thing that keeps me from ditching "Mission Center" for "Resources".

For example: in "Mission Center" it's very clear when each power mode is working, the "speed" is displayed as a whole for the CPU and I can see the differences of frequencies in just one number: Balanced - around 2.0Ghz, Power Saver - around 1.36Ghz and Performance - arround 4.24Ghz.

The "Show Usages of Logical CPUs" options does not solve the problem because, especially on CPUs with a high number of logical cores, it is very confusing to figure things out.

Describe the solution you'd like

It would be nice to have it displayed on the bottom right of the processor usage graph like shown in this mockup:

Describe alternatives you've considered

I don't know if this could be done with an average of the cores frequencies or if there's a better way but since the app already has all the frequency information of each logical core it shouldn't add much cost in performance and probably not also in code.

Additional context

No response