Xeon E5530 's Advantages
Higher base frequency (2.4GHz vs 2GHz)
Lower TDP (80W vs 130W)
Xeon E7 2850 's Advantages
Released 2 years and 1 months late
Higher specification of memory (1333 vs 1066)
Larger L3 cache size (24MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)