Opteron 4340 's Advantages
Lower TDP (95W vs 200W)
AMD EPYC 9135 's Advantages
Released 11 years and 10 months late
Higher specification of memory (6000 vs 3)
Higher base frequency (3.65GHz vs 3.5GHz)
Larger L3 cache size (64MB vs 8MB)
More modern manufacturing process (4nm vs 32nm)