Let's say you are thinking about choosing a CPU, you will be able to make a choice by looking at the Intel Core i7-6900K GeekBench 5 score single and multi core test and understand how powerful is this CPU, is it a good processor or a bad one to buy. Here is useful information from GeekBench 5 benchmark. A step-by-step analysis of all the specifications, to make it easier to read, is summarized in the table. After reading the results of parallel test and video, you already be able to understand do you need to buy Intel Core i7-6900K or not.
The summary data that you have looked at here do not mean that you should be guided entirely by them and trust a simple comparison of these figures. Better to watch benchmarks video and read the reviews of real owners of Intel Core i7-6900K before deciding buy this processor or not.