If there are difficulties with the choice of a CPU, you will solve them by looking at comprehensive benchmark Intel Core i7-7800X Cinebench r20 score single and multi core and understand how powerful is this processor, is it a good processor or a bad one to buy. Here you can find useful information from Cinebench r20 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 parallel test and video, you already be able to understand do you need to buy Intel Core i7-7800X or not.
Although it should be realized that all the number in the text above do not mean that taking them into account you should totally trust a simple comparison of these numbers. Better to watch benchmarks video and read the opinion of real owners of Intel Core i7-7800X before making a decision buy this processor or not.