Xeon X5365 's Advantages
Higher base frequency (3GHz vs 2.0GHz)
Lower TDP (150W vs 300W)
Intel Xeon Platinum 8558U 's Advantages
Released 16 years and 4 months late
Higher specification of memory (DDR5-4800 vs DDR3
Depends on motherboard)
More modern manufacturing process (7nm vs 65nm)