Xeon E 2456 's Advantages
Released 9 years and 3 months late
Higher specification of memory (4800 vs 2133)
Newer PCIe version (5 vs 3)
Higher base frequency (3.3GHz vs 1.8GHz)
More modern manufacturing process (10nm vs 22nm)
Intel Xeon E5 2648L v3 's Advantages
Larger L3 cache size (30MB vs 18MB)
Lower TDP (75W vs 80W)