If you can't decide which processor to buy, you can make a choice after reading the full benchmark Intel Core i7-6660U Cinebench r23 score single and multi core and decide is it a good CPU or a bad one to buy, how powerful is this processor. Here you can find useful information from Cinebench r23 benchmark. A step-by-step analysis of all the specifications, to make it easier to understand, is summarized in the table. After looking at the data this test and video, you already be able to know do you need to buy Intel Core i7-6660U or not.
All the number in the article above do not mean that taking them into account you should totally trust a simple comparison of these figures. Better to watch benchmarks video and read the opinion of of people who bought Intel Core i7-6660U before making a decision buy this CPU or not.