AMD EPYC 7742 's Advantages
Larger L3 cache size (256MB vs 64MB)
AMD EPYC 9015 's Advantages
Released 5 years and 2 months late
Higher specification of memory (6000 vs 3200)
Newer PCIe version (5 vs 4)
Higher base frequency (3.6GHz vs 2.25GHz)
More modern manufacturing process (4nm vs 7nm)
Lower TDP (125W vs 225W)