Intel Xeon W 11855M 's Advantages
Released 6 years and 8 months late
Higher specification of memory (DDR4-3200 vs DDR4-2133)
Newer PCIe version (4 vs 3)
Larger L3 cache size (18MB vs 10MB)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (35W vs 140W)
Intel Xeon E5 1620 v3 's Advantages
Higher base frequency (3.5GHz vs 3.2GHz)