AMD EPYC 7663 '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 E5640 's Advantages
Higher base frequency (2.666GHz vs 2GHz)
Lower TDP (80W vs 240W)