Xeon 6780E 's Advantages
Released 9 years and 9 months late
Higher specification of memory (6400 vs 2133)
Newer PCIe version (5 vs 3)
Higher base frequency (2.2GHz vs 2GHz)
Larger L3 cache size (108MB vs 45MB)
More modern manufacturing process (5nm vs 22nm)
Intel Xeon E5 2686 v3 's Advantages
Lower TDP (120W vs 330W)