Like when apple releases a new iPhone and there’s a new A17 bionic chip, or whatever they’re on now, how is it 40% faster than the last one? What did they discover in 1 year to make it faster? Why didn’t they make these changes in the last one??
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Today, it is because they like to put the iron mine next to the factory, next to where workers live, so there’s less travel time.
It used to be that they could make the factory faster and faster. They realized they can’t do that anymore, at least not cheaply.
Apple silicon is part of the industry’s shift towards “system-on-a-chip”, i.e. putting the entire system, crudely speaking, on the chip instead of spread out on the motherboard or elsewhere.
So to answer your questions: it’s faster because they now do lots of things in one place. And they haven’t done it until now because they weren’t looking. But now chips aren’t getting faster easily so they’re taking the more costly and challenging route of figuring out how to cram all the functions of a system into the chip, efficiently.
40% is an exaggeration. I don’t think they claim that anymore. They may potentially claim that certain “workloads” (Apple term for “what you do”) are 40% faster, because their system-on-a-chip design was recently optimized for that workload, e.g. steel production, per my initial example.
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