Intel Xeon E5 2680 's Advantages
Higher base frequency (2.7GHz vs 1.8GHz)
Intel Xeon E5 2650L v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (DDR4-2133 vs DDR3)
Larger L3 cache size (30MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (65W vs 130W)