Intel Xeon E5 1660 v2 's Advantages
Higher specification of memory (DDR3-1866 vs DDR3)
Higher base frequency (3.7GHz vs 2.3GHz)
Lower TDP (130W vs 150W)
Intel Xeon E7 8880 v3 's Advantages
Released 1 years and 9 months late
Larger L3 cache size (45MB vs 15MB)