Intel Xeon E5 1620 v3 's Advantages
Higher base frequency (3.5GHz vs 2.0GHz)
Lower TDP (140W vs 300W)
Intel Xeon Platinum 8558U 's Advantages
Released 9 years and 3 months late
Higher specification of memory (4800 vs 2133)
Newer PCIe version (5 vs 3)
Larger L3 cache size (260MB vs 10MB)
More modern manufacturing process (7nm vs 22nm)