Intel Xeon E5 1620 v3 's Advantages
Released 3 years and 7 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2.133GHz)
Larger L3 cache size (10MB vs 8MB)
More modern manufacturing process (22nm vs 32nm)
Intel Xeon E5606 's Advantages
Lower TDP (80W vs 140W)