Xeon E5530 's Advantages
Higher specification of memory (1066 vs 3)
Lower TDP (80W vs 130W)
Intel Xeon E5 4617 's Advantages
Released 3 years and 2 months late
Newer PCIe version (3 vs 2)
Higher base frequency (2.9GHz vs 2.4GHz)
Larger L3 cache size (15MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)