Let's say you can't decide which processor to buy, you can make a choice after reading the detailed benchmark Intel Core i3-9300 Cinebench r20 score single and multi core and understand is it a good CPU or a bad one to buy, how powerful is this processor. Here is all information from Cinebench r20 benchmark. A careful analysis of all the specifications, to make it easier to understand, is made by the table. After looking at the data of joint test and video, you already be able to know do you need to buy Intel Core i3-9300 or not.
Although it should be realized that all the number that you have looked at here do not mean that taking them into account you should totally trust a simple comparison of these numbers. Be sure to watch benchmarks video and read the reviews of of people who bought Intel Core i3-9300 before deciding buy this CPU or not.