Xeon E7 4820 's Advantages
Higher base frequency (2GHz vs 1.8GHz)
Intel Xeon E5 2650L v3 's Advantages
Released 3 years and 5 months late
Higher specification of memory (2133 vs 1333)
Larger L3 cache size (30MB vs 18MB)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (65W vs 105W)