Let's say you can't decide which CPU to buy, you can make a choice by looking at the Intel Core i9-7900X Cinebench r23 score multi and single core test and decide is it a good CPU or a bad one to buy, how powerful is this processor. Here is all information from Cinebench r23 benchmark. A careful analysis of all the specifications, to make it easier to understand, is presented in the form of the table. After reading the results of joint test and video, you can already make an informed decision about do you need to buy Intel Core i9-7900X or not.
However, it should be realized that all the figures in the text above do not mean that taking them into account you should completely trust a simple quantitative comparison. Be sure to watch the video tests and read the reviews of of people who bought Intel Core i9-7900X before making a decision buy this CPU or not.