Intel Xeon E3 1285 v6 's Advantages
Higher base frequency (4.1GHz vs 3.55GHz)
Lower TDP (79W vs 280W)
AMD EPYC 9355 's Advantages
Released 7 years and 2 months late
Higher specification of memory (6000 vs 4)
Newer PCIe version (5 vs 3)
Larger L3 cache size (256MB vs 8MB)
More modern manufacturing process (4nm vs 14nm)