Intel Xeon E5 2680 v3 's Advantages
Released 2 years and 6 months late
Larger L3 cache size (30MB vs 12MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (120W vs 130W)
Intel Xeon E5 1650 's Advantages
Higher specification of memory (DDR3 vs DDR3)
Higher base frequency (3.2GHz vs 2.5GHz)