Opteron 1381 's Advantages
Higher specification of memory (1333 vs 4)
Intel Xeon E 2124 's Advantages
Released 8 years and 11 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.4GHz vs 2.5GHz)
Larger L3 cache size (8MB vs 6MB)
More modern manufacturing process (14nm vs 45nm)
Lower TDP (72W vs 115W)