Intel Xeon E5603 's Advantages
Lower TDP (80W vs 225W)
AMD EPYC 7742 's Advantages
Released 8 years and 6 months late
Higher specification of memory (DDR4-3200 vs DDR3)
Newer PCIe version (4 vs 2)
Higher base frequency (2.25GHz vs 1.6GHz)
Larger L3 cache size (256MB vs 4MB)