Opteron 6366 HE 's Advantages
Lower TDP (85W vs 270W)
Intel Xeon w5 3425 's Advantages
Released 10 years and 3 months late
Higher specification of memory (DDR5-4800 vs DDR3)
Newer PCIe version (5 vs 2)
Higher base frequency (3.2GHz vs 1.8GHz)
Larger L3 cache size (30MB vs 8MB)