Intel Core i7 5960X's Advantages
Larger L3 cache size (20MB vs 15MB)
Intel Core i7 6850K's Advantages
Released 1 years and 9 months late
Larger memory bandwidth (76.8GB/s vs 68GB/s)
Higher base frequency (3.6GHz vs 3.0GHz)
More modern manufacturing process (14nm vs 22nm)