Opteron 6168 's Advantages
Larger L3 cache size (12MB vs 8MB)
Xeon E 2144G 's Advantages
Released 8 years and 4 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.6GHz vs 1.9GHz)
Lower TDP (71W vs 115W)