Workstations come in many configurations to do many things other than gaming. 1 or 2 CPU, how many cores, how many threads, RAM capacity can exceed 100GB. Virtualization also. How many GPUs. RAID and SAS arrays. Generally a fast 4-6 core CPU with large 3 level cache, and enough RAM to cover the OS + any GPU caching. Memory bandwidth and speed can limit CPU performance also.