Xeon X3460 's Advantages
Higher specification of memory (1333 vs 3)
Higher base frequency (2.8GHz vs 2.4GHz)
Intel Xeon E5 2609 's Advantages
Released 2 years and 6 months late
Newer PCIe version (3 vs 2)
Larger L3 cache size (10MB vs 8MB)
More modern manufacturing process (32nm vs 45nm)
Lower TDP (80W vs 95W)