Xeon E5530 's Advantages
Higher base frequency (2.4GHz vs 2GHz)
Opteron A1170 's Advantages
Released 6 years and 10 months late
Higher specification of memory (1866 vs 1066)
Newer PCIe version (3 vs 2)
More modern manufacturing process (28nm vs 45nm)
Lower TDP (32W vs 80W)