Xeon 6980P 's Advantages
Released 11 years late
Higher specification of memory (8800 vs 1866)
Newer PCIe version (5 vs 3)
Larger L3 cache size (504MB vs 25MB)
More modern manufacturing process (5nm vs 22nm)
Intel Xeon E5 1680 v2 's Advantages
Higher base frequency (3GHz vs 2GHz)
Lower TDP (130W vs 500W)