Xeon 6780E 's Advantages
Released 13 years and 4 months late
Higher specification of memory (6400 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (2.2GHz vs 2.133GHz)
Larger L3 cache size (108MB vs 12MB)
More modern manufacturing process (5nm vs 32nm)
Xeon L5639 's Advantages
Lower TDP (60W vs 330W)