Different kinds of cores. M1 has 4 performance (high power) cores and 4 efficiency (low power) cores. M1 pro base SKU has 6 high power and 2 efficiency, higher

Different kinds of cores. M1 has 4 performance (high power) cores and 4 efficiency (low power) cores. M1 pro base SKU has 6 high power and 2 efficiency, higher SKUs have many more performance cores