Intel Xeon Platinum 8558 's Advantages
Released 13 years and 9 months late
Higher specification of memory (DDR5-5200 vs DDR3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (260MB vs 12MB)
More modern manufacturing process (7nm vs 32nm)
Intel Xeon E5640 's Advantages
Higher base frequency (2.666GHz vs 2.1GHz)
Lower TDP (80W vs 330W)