Opteron 1381 's Advantages
Lower TDP (115W vs 130W)
Intel Xeon w3 2425 's Advantages
Released 13 years and 8 months late
Higher specification of memory (4400 vs 1333)
Newer PCIe version (5 vs 2)
Higher base frequency (3GHz vs 2.5GHz)
Larger L3 cache size (15MB vs 6MB)
More modern manufacturing process (10nm vs 45nm)