AMD EPYC 7643P 's Advantages
Released 12 years and 5 months late
Higher specification of memory (DDR4-3200 vs DDR3)
Newer PCIe version (4 vs 3)
Larger L3 cache size (256MB vs 8MB)
Intel Xeon E3 1275 's Advantages
Higher base frequency (3.4GHz vs 2.3GHz)
Lower TDP (95W vs 225W)