AMD EPYC 7642 's Advantages
Released 9 years and 11 months late
Higher specification of memory (3200 vs 1333)
Newer PCIe version (4 vs 2)
Larger L3 cache size (256MB vs 8MB)
More modern manufacturing process (7nm vs 45nm)
Xeon X3470 's Advantages
Higher base frequency (2.933GHz vs 2.4GHz)
Lower TDP (95W vs 225W)