Intel Xeon E5503 's Advantages
Lower TDP (80W vs 225W)
AMD EPYC 7642 's Advantages
Released 9 years and 5 months late
Higher specification of memory (DDR4-3200 vs DDR3)
Newer PCIe version (4 vs 2)
Higher base frequency (2.4GHz vs 2GHz)
Larger L3 cache size (256MB vs 4MB)