Opteron 1381 's Advantages
Higher base frequency (2.5GHz vs 2GHz)
Xeon E 2278GEL 's Advantages
Released 10 years late
Higher specification of memory (2666 vs 1333)
Newer PCIe version (3 vs 2)
Larger L3 cache size (16MB vs 6MB)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (35W vs 115W)