Intel Xeon E5 2680 's Advantages
Higher base frequency (2.7GHz vs 2.3GHz)
Lower TDP (130W vs 150W)
Xeon 6511P 's Advantages
Released 12 years and 11 months late
Higher specification of memory (6400 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (72MB vs 20MB)
More modern manufacturing process (5nm vs 32nm)