Xeon 6980P 's Advantages
Released 12 years and 4 months late
Higher specification of memory (8800 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (504MB vs 8MB)
More modern manufacturing process (5nm vs 22nm)
Intel Xeon E3 1275 v2 's Advantages
Higher base frequency (3.5GHz vs 2GHz)
Lower TDP (77W vs 500W)