Intel Xeon E5 2680 's Advantages
Higher base frequency (2.7GHz vs 2.6GHz)
Lower TDP (130W vs 145W)
Intel Xeon E5 2697 v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Larger L3 cache size (35MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)