Let's say there are difficulties with the choice of a processor, you will solve them by seeing the full test Intel Core i5-13400 Cinebench r15 score multi and single core and decide is it a good CPU or a bad one to buy, how powerful is this CPU. Here you can find useful information from Cinebench r15 benchmark. A thorough review of all the technical characteristics, to make it easier to understand, is summarized in the table. After reading the results this test and video, you can already make an briefed decision about do you need to buy Intel Core i5-13400 or not.
All the number in the text above do not mean that you should be guided entirely by them and trust a simple quantitative comparison. Better to watch benchmarks video and read the reviews of of people who bought Intel Core i5-13400 before deciding buy this processor or not.