Perhaps you can't decide which CPU to buy, you can make a decision by looking at the AMD Ryzen 7 7700X Cinebench r20 score single and multi core test and decide how powerful is this CPU, is it a good CPU or a bad one to buy. Here you can find useful information from Cinebench r20 benchmark. A thorough analysis of all the technical characteristics, 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 briefed decision about do you need to buy AMD Ryzen 7 7700X or not.
The summary data in the text above do not mean that taking them into account you should fully trust a simple comparison of these numbers. Better to watch the testing video and read the opinion of real owners of AMD Ryzen 7 7700X before deciding buy this processor or not.