For example you can't decide which processor to buy, you can make a decision after reading the full benchmark Intel Core i7-6900K Cinebench r20 score multi and single core and understand is it a good CPU or a bad one to buy, how powerful is this CPU. Here you can find useful information from Cinebench r20 benchmark. A careful analysis of all the technical characteristics, so that it can be easier to read, is summarized in the table. After looking at the data of parallel test and video, you can already make an informed decision about do you need to buy Intel Core i7-6900K or not.
The summary data in the text above do not mean that taking them into account you should totally trust a simple comparison of these numbers. Better to watch benchmarks video and read the reviews of of people who bought Intel Core i7-6900K before making a decision buy this CPU or not.