If you can't decide which CPU to buy, you can make a decision after reading the comprehensive test Intel Core i5-9400H Cinebench r20 score single and multi core and decide how powerful is this processor, is it a good processor or a bad one to buy. Here you can find all information from Cinebench r20 benchmark. A thorough analysis of all the technical characteristics, to make it easier to read, is presented in the form of the table. After reading the results this test and video, you can already make an informed decision about do you need to buy Intel Core i5-9400H or not.
However, it should be realized that all the data in the text above do not mean that taking them into account you should entirely trust a simple comparison of these numbers. Be sure to watch the video tests and read the opinion of of people who bought Intel Core i5-9400H before making a choice buy this processor or not.