Intel Xeon E5 2609 v2 's Advantages
Higher base frequency (2.5GHz vs 2GHz)
Lower TDP (80W vs 500W)
Xeon 6980P 's Advantages
Released 11 years late
Higher specification of memory (8800 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (504MB vs 10MB)
More modern manufacturing process (5nm vs 22nm)