Intel Xeon E5 2680 's Advantages
Higher base frequency (2.7GHz vs 2GHz)
Intel Xeon E5 4620 v3 's Advantages
Released 3 years and 3 months late
Higher specification of memory (DDR4-1866 vs DDR3)
Larger L3 cache size (25MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (105W vs 130W)