Opteron 1389 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.9GHz vs 2.3GHz)
Intel Xeon E3 1220L v2 's Advantages
Released 2 years and 11 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (8MB vs 6MB)
More modern manufacturing process (22nm vs 45nm)
Lower TDP (17W vs 115W)