Intel Xeon E5 2680 's Advantages
Higher base frequency (2.7GHz vs 2.3GHz)
Lower TDP (130W vs 135W)
Intel Xeon E5 2698 v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (2133 vs 3)
Larger L3 cache size (40MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)