Opteron 6366 HE 's Advantages
Lower TDP (85W vs 120W)
Intel Xeon E5 2686 v3 's Advantages
Released 1 years and 10 months late
Higher specification of memory (DDR3 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (2GHz vs 1.8GHz)
Larger L3 cache size (45MB vs 8MB)