AMD EPYC 7642 's Advantages
Released 6 years and 8 months late
Higher specification of memory (3200 vs 3)
Larger L3 cache size (256MB vs 8MB)
More modern manufacturing process (7nm vs 32nm)
Opteron 4340 's Advantages
Higher base frequency (3.5GHz vs 2.4GHz)
Lower TDP (95W vs 225W)