Intel Xeon E5 1620 v3 's Advantages
Released 2 years and 4 months late
Higher specification of memory (2133 vs 3)
Higher base frequency (3.5GHz vs 2.7GHz)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E5 4650 's Advantages
Larger L3 cache size (20MB vs 10MB)
Lower TDP (130W vs 140W)