Intel Xeon X5675 's Advantages
Higher base frequency (3.066GHz vs 2.0GHz)
Lower TDP (95W vs 300W)
Intel Xeon Platinum 8558U 's Advantages
Released 12 years and 10 months late
Higher specification of memory (DDR5-4800 vs DDR3)
Newer PCIe version (5 vs 2)
Larger L3 cache size (260MB vs 12MB)
More modern manufacturing process (7nm vs 32nm)