Intel Xeon E5 1620 v3 's Advantages
Released 3 years and 7 months late
Higher specification of memory (2133 vs 1333)
Newer PCIe version (3 vs 2)
Higher base frequency (3.5GHz vs 2.4GHz)
More modern manufacturing process (22nm vs 32nm)
Xeon L5645 's Advantages
Larger L3 cache size (12MB vs 10MB)
Lower TDP (60W vs 140W)