Intel Xeon W3680 's Advantages
Higher base frequency (3.333GHz vs 2.3GHz)
Lower TDP (130W vs 225W)
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)