Intel Xeon E5 2649 v3 's Advantages
Larger L3 cache size (25MB vs 8MB)
Intel Xeon E 2124 's Advantages
Released 3 years and 8 months late
Higher specification of memory (DDR4 vs DDR3)
Higher base frequency (3.4GHz vs 2.3GHz)
More modern manufacturing process (14nm vs 22nm)
Lower TDP (72W vs 105W)