AMD EPYC 7643 's Advantages
Released 11 years late
Higher specification of memory (DDR4-3200 vs DDR3)
Newer PCIe version (4 vs 2)
Larger L3 cache size (256MB vs 12MB)
Intel Xeon X5670 's Advantages
Higher base frequency (2.933GHz vs 2.3GHz)
Lower TDP (95W vs 225W)