Both Intel's and AMD's laptop CPUs include NPUs, and they are indeed slower than M4.
Nevertheless, Apple's bragging is a little weird, because both Intel and AMD have already announced that in a few months they will launch laptop CPUs with much faster NPUs than Apple M4 (e.g. 77 TOPS for AMD), so Apple will hold the first place for only a very short time.
It is NOT the fastest available today. I have a 1 year old PC bellow my desk which does faster neural network processing than M4. It has an Intel CPU and NVIDIA 4090. It runs Llama 7B models MUCH faster than any Apple's chip. And it is a PC. I am sorry, but the sentence "It’s the fastest available today." is a straightforward lie...
Why do you believe that? Announcements about future releases, by Intel and AMD, are not current future facts. If they deliver, then fine, but you speak like they're factual.
Nevertheless, Apple's bragging is a little weird, because both Intel and AMD have already announced that in a few months they will launch laptop CPUs with much faster NPUs than Apple M4 (e.g. 77 TOPS for AMD), so Apple will hold the first place for only a very short time.