The M4 and M4 Pro chips in the new Mac Mini are expected to offer competitive performance and energy efficiency compared to the latest desktop processors from Intel and AMD. Apple's custom silicon has already shown impressive performance gains and power efficiency in their other products like the MacBook and iPad. The M4 and M4 Pro chips are likely to continue this trend, potentially outperforming traditional desktop processors in certain tasks while consuming less power. With Apple's focus on optimizing hardware and software integration, the new Mac Mini with M4 and M4 Pro chips could deliver a seamless user experience with excellent performance for both everyday tasks and demanding workloads, all while being energy efficient and generating less heat.