Intel Xeon E5 1620 v3 's Advantages
Higher base frequency (3.5GHz vs 2.5GHz)
Lower TDP (140W vs 270W)
Intel Xeon w7 3445 's Advantages
Released 8 years and 5 months late
Higher specification of memory (4800 vs 2133)
Newer PCIe version (5 vs 3)
Larger L3 cache size (52.5MB vs 10MB)
More modern manufacturing process (10nm vs 22nm)