Intel Xeon E5 2699 v3 's Advantages
Higher base frequency (2.3GHz vs 2GHz)
Lower TDP (145W vs 500W)
Xeon 6980P 's Advantages
Released 10 years late
Higher specification of memory (8800 vs 2133)
Newer PCIe version (5 vs 3)
Larger L3 cache size (504MB vs 45MB)
More modern manufacturing process (5nm vs 22nm)