You probably won’t notice this when using the new machine.

For me, it only becomes noticeable when I go back to something slower.

It’s easy to take the new speed as a given.

> What if I don't notice the difference between video playback consuming 20% of the chip's available compute and it consuming 10%?

You would notice it in increased battery life. A CPU that finishes the task faster and more efficiently will get back into low power mode quicker.