Xeon E5530 's Advantages
Higher specification of memory (1066 vs 4)
Lower TDP (80W vs 82W)
Intel Xeon E3 1280 v3 's Advantages
Released 4 years and 3 months late
Newer PCIe version (3 vs 2)
Higher base frequency (3.6GHz vs 2.4GHz)
More modern manufacturing process (22nm vs 45nm)