If you can't decide which CPU to buy, you can make a choice after reading the detailed test Intel Core i5-6600 Cinebench r15 score multi and single core and decide is it a good processor or a bad one to buy, how powerful is this processor. Here is all information from Cinebench r15 benchmark. A step-by-step analysis of all the specifications, to make it easier to read, is summarized in the table. After looking at the data of parallel test and video, you already be able to know do you need to buy Intel Core i5-6600 or not.
The summary data in the text above do not mean that taking them into account you should undividedly trust a simple comparison of these figures. Better to watch the video tests and read the opinion of real owners of Intel Core i5-6600 before deciding buy this processor or not.