Intel Xeon X5680 's Advantages
Higher base frequency (3.333GHz vs 2GHz)
Intel Xeon E5 2683 v3 's Advantages
Released 4 years and 7 months late
Higher specification of memory (DDR4-2133 vs DDR3)
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)