For example you have difficulties with the choice of a CPU, you will solve them by seeing the full benchmark Intel Core i7-6660U Cinebench r15 score single and multi core and understand how powerful is this CPU, is it a good CPU or a bad one to buy. Here you can find all information from Cinebench r15 benchmark. A careful review of all the specifications, to make it easier to understand, is made by the table. After looking at the data this test and video, you can already make an briefed decision about do you need to buy Intel Core i7-6660U or not.
All the figures that you have looked at here do not mean that taking them into account you should totally trust a simple quantitative comparison. Better to watch benchmarks video and read the opinion of real owners of Intel Core i7-6660U before deciding buy this CPU or not.