Intel Xeon E5 4620 's Advantages
Higher base frequency (2.2GHz vs 2GHz)
Larger L3 cache size (16MB vs 15MB)
Intel Xeon E5 2608L v3 's Advantages
Released 2 years and 4 months late
Higher specification of memory (1866 vs 3)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (52W vs 130W)