Intel Xeon E5 2608L v3 's Advantages
Released 2 years and 6 months late
Higher specification of memory (DDR4-1866 vs DDR3)
More modern manufacturing process (22nm vs 32nm)
Lower TDP (52W vs 130W)
Intel Xeon E5 1660 's Advantages
Higher base frequency (3.3GHz vs 2GHz)