The chapter explores the features and advancements of Apple's new M4 chip, such as the shift to second-generation three nanometer technology, increased transistor count, enhanced memory bandwidth, updated core configurations with ML accelerators, and performance boosts in comparison to the M2. It delves into a detailed comparison between the M4 and its predecessors, focusing on GPU cores, performance cores, and RAM, along with a discussion on Apple's binning strategy and the implications of performance benchmarks.