After reading all of this Im still left dubious. It seems it is all a big false advertisement and unnecessary. Left in what I had originally had in the "beyond my need to remember or even care about" category."
Well keep in mind that the main reason why there is so much conflict between information on how a core works and functions is because its a ever evolving aspect of computing.
Multi core isnt as complex as it sounds but at the same time its something that is changing as each iteration of core computing changes things up and dynamics are shifted.
A great example of this change can be found in AMD
For the last generation of AMD processors the die looked like this:
While for the current iteration known as Zen (opr Ryzen) it looks like this:
Then when you compare that to a intel die:
Each one of these must look like strange alien technology from a far off world to you but for those of us who are tech savvy enough we can see what does what and how things interact with eachother.
To put this all into human terms that you may be able to understand think of your processor as a engine in your car.
And the engine you use is different then the one I have.
Each engine has similar features but are from different makers, I have a Chevy and you have a Ford.
At their base there is no real difference between them but how they are made can determine where we differ.
Your car may be able to give more horsepower but mine is better on fuel.
Or you may be able to transverse hills but mine may be better on the racetrack.
Not to mention you may have a pickup truck and I have a 4 door sedan.
One is not better then the other but one has some advantages that the other does not.
This is how a processor works, dual core processors are kind of like a sedan.
They are often times great with gas as in not needing as much power but don't perform well at large tasks such as being used to move large objects.
The quad core is almost like a pickup truck able to move far more, with maybe a little penalty on energy consumption.
Of course this depends on the processor, a dual core processor from 12 years ago was more like a 50's monster car like a Ford Mustang, great on speed but terrible at gas.
Now they are more like motorcycles, still fast but not nearly as hungry as their older counterparts.