Intel Xeon E5 2650 's Advantages
Released 3 years late
Newer PCIe version (3 vs 2)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Xeon E5530 's Advantages
Higher specification of memory (1066 vs 3)
Higher base frequency (2.4GHz vs 2GHz)
Lower TDP (80W vs 95W)