Intel Xeon E 2124 's Advantages
Released 3 years and 8 months late
Higher base frequency (3.4GHz vs 2.3GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (72W vs 105W)
Intel Xeon E5 2649 v3 's Advantages
Higher specification of memory (2133 vs 4)
Larger L3 cache size (25MB vs 8MB)