AMD EPYC 9684X 's Advantages
Released 2 years and 3 months late
Higher specification of memory (DDR5-4800 vs DDR4-3200)
Newer PCIe version (5 vs 4)
Larger L3 cache size (1152MB vs 64MB)
More modern manufacturing process (5nm vs 7nm)
AMD EPYC 7453 's Advantages
Higher base frequency (2.75GHz vs 2.55GHz)
Lower TDP (225W vs 400W)