AMD EPYC 7272 's Advantages
Higher base frequency (2.6GHz vs 2.4GHz)
Lower TDP (120W vs 400W)
AMD EPYC 9745 's Advantages
Released 5 years and 2 months late
Higher specification of memory (6000 vs 3200)
Newer PCIe version (5 vs 4)
Larger L3 cache size (256MB vs 64MB)
More modern manufacturing process (3nm vs 7nm)