Perhaps you can't decide which CPU to buy, you can make a choice after reading the comprehensive benchmark AMD Ryzen 5 7640HS Cinebench r23 score multi and single core and decide how powerful is this CPU, is it a good CPU or a bad one to buy. Here is all information from Cinebench r23 benchmark. A careful review of all the specifications, to make it easier to read, is presented in the form of the table. After reading the results of all test and video, you can already make an informed decision about do you need to buy AMD Ryzen 5 7640HS or not.
All the figures in the article above do not mean that taking them into account you should fully trust a simple comparison of these figures. Better to watch the video tests and read the reviews of real owners of AMD Ryzen 5 7640HS before making a choice buy this CPU or not.