Compared to the M1, Intel is still restricted by the existing memory and I/O interfaces and by x86 compatibility, which means they can’t do certain things the M1 did, like the integrated unified memory (for massive memory bandwidth) and the relaxed memory model. And as the siblings explain, the P/E design is more about power efficiency than about performance, although the increased power efficiency does allow for more cores at the high end.
Not really, the M1 has a relaxed memory model, the 11th gen intel core series has a strict memory model. Generally the relaxed memory model allows better bandwidth and performance out of the same memory system.
Not to mention there's the M1 pro, max, and ultra if you need more memory bandwidth.
