AMD EPYC 9124 's Advantages
Released 5 years and 5 months late
Higher specification of memory (DDR5-4800 vs DDR4-2666)
Newer PCIe version (5 vs 3)
Higher base frequency (3GHz vs 2GHz)
More modern manufacturing process (5nm vs 14nm)
AMD EPYC 7401 's Advantages
Lower TDP (170W vs 200W)