Perhaps you are thinking about choosing a CPU, you will be able to make a decision by looking at the Intel Core i5-9400T Cinebench r15 score single and multi core test and understand how powerful is this processor, is it a good CPU or a bad one to buy. Here is all information from Cinebench r15 benchmark. A thorough analysis of all the technical characteristics, 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 i5-9400T or not.
All the data in the text above do not mean that you should be guided entirely by them and trust a simple quantitative comparison. Better to watch the testing video and read the opinion of real owners of Intel Core i5-9400T before deciding buy this processor or not.