How to choose appropriate high-performance computers to run EE?

Recently I have access to a workstation, which has processors of “Intel® Xeon® Silver 4116 CPU @ 2.10 GHz”. You can see the figure below. When running EE, I choose 20 threads for example. However, I find that the running time is longer than my personal computer. Could you give me some advices when buying the high performance computers (e.g., computer configuration)?

Increasing number of threads should initially provide significant speed gains, however, it is a matter of diminishing returns with more threads as shown in this graphic:, you should ensure you are not using more than half the maximum available threads as outlined here: information about hardware is provided here: