Intel Xeon E5630 's Advantages
Released 9 months late
Higher base frequency (2.533GHz vs 2.5GHz)
Larger L3 cache size (12MB vs 6MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (80W vs 115W)
Opteron 1381 's Advantages
Higher specification of memory (1333 vs 3)