Intel Xeon E7 4820 v3 's Advantages
Lower TDP (115W vs 270W)
Intel Xeon w7 3445 's Advantages
Released 7 years and 8 months late
Higher specification of memory (DDR5-4800 vs DDR3)
Newer PCIe version (5 vs 3)
Higher base frequency (2.5GHz vs 1.9GHz)
Larger L3 cache size (52.5MB vs 25MB)
More modern manufacturing process (10nm vs 22nm)