Opteron 4340 's Advantages
Higher base frequency (3.5GHz vs 3GHz)
Lower TDP (95W vs 200W)
AMD EPYC 9124 's Advantages
Released 9 years and 11 months late
Higher specification of memory (4800 vs 3)
Larger L3 cache size (64MB vs 8MB)
More modern manufacturing process (5nm vs 32nm)