For example you can't decide which processor to buy, you can make a decision by looking at the Intel Core i9-9900T Cinebench r15 score multi and single core test and decide is it a good processor or a bad one to buy, how powerful is this processor. Here you can find useful information from Cinebench r15 benchmark. A step-by-step analysis of all the technical characteristics, to make it easier to understand, is made by the table. After looking at the data this test and video, you already be able to know do you need to buy Intel Core i9-9900T or not.
The summary data in the text above do not mean that taking them into account you should undividedly trust a simple quantitative comparison. Be sure to watch the testing video and read the reviews of of people who bought Intel Core i9-9900T before making a selection buy this processor or not.