Intel Xeon X5675 's Advantages
Higher base frequency (3.066GHz vs 2.4GHz)
Lower TDP (95W vs 225W)
AMD EPYC 7642 's Advantages
Released 8 years and 6 months late
Higher specification of memory (3200 vs 3)
Newer PCIe version (4 vs 2)
Larger L3 cache size (256MB vs 12MB)
More modern manufacturing process (7nm vs 32nm)