Intel Xeon X5690 's Advantages
Higher base frequency (3.466GHz vs 2.1GHz)
Intel Xeon E5 4660 v3 's Advantages
Released 4 years and 4 months late
Higher specification of memory (2133 vs 3)
Newer PCIe version (3 vs 2)
Larger L3 cache size (35MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (120W vs 130W)