Opteron 6366 HE 's Advantages
Lower TDP (85W vs 250W)
Xeon 6746E 's Advantages
Released 11 years and 7 months late
Higher specification of memory (5600 vs 1866)
Newer PCIe version (5 vs 2)
Higher base frequency (2GHz vs 1.8GHz)
Larger L3 cache size (96MB vs 8MB)
More modern manufacturing process (5nm vs 32nm)