Looking at https://en.wikipedia.org/wiki/Apple_M4#Comparison_with_other_SoCs https://en.wikipedia.org/wiki/Apple_M4#Comparison_with_other... M4 is built with T

Looking at https://en.wikipedia.org/wiki/Apple_M4#Comparison_with_other_SoCs https://en.wikipedia.org/wiki/Apple_M4#Comparison_with_other... M4 is built with TSMC's 2nd Gen 3nm process. M3 is on the 1st gen 3nm. For the base M3 vs base M4: - the CPU (4P+4E) & GPU (8) core counts are the same - NPU perf is slightly better for M4, I think, (M4's 38TOPS @ INT8 vs M3's 18TOPS @ INT16) - Memory Bandwidth is higher for M4 (120 GB/s vs 102.4 GB/s) - M4 has a higher TDP (22W vs 20W) - M4 has higher transistor count (28B vs 25B)