Which is the faster cpu and why?

Answer:
Core i7 unlocked
Explanation:
This is known to not only be faster but also more stable.
Answer:
Intel Core i7 Unlocked has more GHz (gigahertz) along with an Octa core.
Explanation:
More gigahertz means your CPU would run all applications at a faster speed and be more efficient. Not only that, an octa core is much more efficient than a quad core. (Octa meaning 8 while Quad being 4).