Apple's M2 Ultra is a mighty processor with 24 general-purpose cores and up to 76 integrated GPU cores. It is also probably faster than Intel's 28-core Xeon W found in the 2019 Mac Pro, so new Mac Pro workstation owners will feel a significant performance uplift. But according to a purported benchmark, this CPU cannot beat competitors from AMD and Intel in Geekbench 5 (via @VadimYuryev) as they boast very high clocks or feature a formidable core count.
Heavy-duty workstation-grade processors are different from desktop and server CPUs in that they should deliver both very responsive performance (like all client processors) and consistently high performance under heavy workloads. This means that they must feature high instruction-per-clock performance, high clocks, high core count, support for loads of memory, and feature loads of PCIe lanes. AMD's Ryzen Threadripper Pro W5995X and Intel's Xeon W9-3495X comply with these requirements with their 64 and 56 cores, respectively. In a nutshell, they use server silicon configured to offer extremely high clocks when needed.
