If you are thinking about choosing a CPU, you will be able to make a choice after reading the comprehensive benchmark Intel Core i5-8257U Cinebench r20 score multi and single core and decide is it a good processor or a bad one to buy, how powerful is this processor. Here is useful information from Cinebench r20 benchmark. A careful analysis of all the specifications, to make it easier to read, is made by the table. After looking at the data of joint test and video, you already be able to understand do you need to buy Intel Core i5-8257U or not.
The summary data in the article above do not mean that taking them into account you should fully trust a simple quantitative comparison. Be sure to watch the testing video and read the opinion of of people who bought Intel Core i5-8257U before deciding buy this processor or not.