For example you can't decide which CPU to buy, you can make a decision after reading the comprehensive benchmark Intel Core i5-9400T GeekBench 5 score single and multi core and understand is it a good CPU or a bad one to buy, how powerful is this CPU. Here is useful information from GeekBench 5 benchmark. A thorough review of all the specifications, to make it easier to read, is presented in the form of the table. After looking at the data this test and video, you already be able to know do you need to buy Intel Core i5-9400T or not.
All the figures in the article above do not mean that you should be guided entirely by them and trust a simple quantitative comparison. Better to watch benchmarks video and read the reviews of real owners of Intel Core i5-9400T before making a decision buy this processor or not.