Xeon E 2456 's Advantages
Released 11 years and 7 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 3)
Larger L3 cache size (18MB vs 8MB)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (80W vs 87W)
Intel Xeon E3 1290 v2 's Advantages
Higher base frequency (3.7GHz vs 3.3GHz)