Intel Xeon X5690 's Advantages
Higher base frequency (3.466GHz vs 3.1GHz)
Larger L3 cache size (12MB vs 8MB)
Intel Xeon E3 1220 v2 's Advantages
Released 1 years and 3 months late
Newer PCIe version (3 vs 2)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (69W vs 130W)