Let's say there are difficulties with the choice of a processor, you will solve them by looking at detailed test AMD EPYC 7643 Cinebench r20 score single and multi core and understand how powerful is this processor, is it a good CPU or a bad one to buy. Here is all information from Cinebench r20 benchmark. A thorough review of all the specifications, to make it easier to understand, is summarized in the table. After looking at the data of all test and video, you already be able to know do you need to buy AMD EPYC 7643 or not.
All the number in the table above do not mean that you should be guided entirely by them and trust a simple quantitative comparison. Better to watch the testing video and read the opinion of of people who bought AMD EPYC 7643 before making a choice buy this processor or not.