Intel Xeon E5 4603 's Advantages
Released 2 years and 11 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (10MB vs 6MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (95W vs 115W)
Opteron 1389 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.9GHz vs 2GHz)