Intel Xeon E5 2470 's Advantages
Released 2 years and 3 months late
Higher base frequency (2.3GHz vs 2GHz)
Larger L3 cache size (20MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Xeon EC5509 's Advantages
Higher specification of memory (1066 vs 3)
Lower TDP (85W vs 95W)