Opteron 1381 's Advantages
Lower TDP (115W vs 270W)
Intel Xeon w7 3445 's Advantages
Released 13 years and 8 months late
Higher specification of memory (4800 vs 1333)
Newer PCIe version (5 vs 2)
Larger L3 cache size (52.5MB vs 6MB)
More modern manufacturing process (10nm vs 45nm)