Intel Xeon E7 8891 v3 's Advantages
Higher specification of memory (1866 vs 4)
Larger L3 cache size (45MB vs 8MB)
Intel Xeon E 2124 's Advantages
Released 2 years and 11 months late
Higher base frequency (3.4GHz vs 2.8GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (72W vs 165W)