Intel Xeon E5 4650L 's Advantages
Higher base frequency (2.6GHz vs 2GHz)
Lower TDP (115W vs 120W)
Intel Xeon E5 2686 v3 's Advantages
Released 2 years and 4 months late
Higher specification of memory (DDR3 vs DDR3)
Larger L3 cache size (45MB vs 20MB)
More modern manufacturing process (22nm vs 32nm)