For example you can't decide which CPU to buy, you can make a decision after reading the full benchmark AMD Ryzen 9 4900H Cinebench r15 score multi and single core and understand how powerful is this CPU, is it a good CPU or a bad one to buy. Here is all 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 looking at the data this test and video, you already be able to understand do you need to buy AMD Ryzen 9 4900H or not.
However, it should be realized that all the figures in the text above do not mean that you should be guided entirely by them and trust a simple quantitative comparison. Be sure to watch benchmarks video and read the reviews of real owners of AMD Ryzen 9 4900H before making a selection buy this CPU or not.