Xeon E 2144G 's Advantages
Released 6 years and 8 months late
Higher specification of memory (DDR4-2666 vs DDR3)
Newer PCIe version (3 vs 2)
Higher base frequency (3.6GHz vs 2.2GHz)
Lower TDP (71W vs 115W)
Opteron 6274 's Advantages
Larger L3 cache size (16MB vs 8MB)