Xeon E 2456 's Advantages
Released 8 years and 6 months late
Higher specification of memory (4800 vs 1866)
Newer PCIe version (5 vs 3)
Larger L3 cache size (18MB vs 6MB)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (80W vs 95W)
Intel Xeon E3 1285 v4 's Advantages
Higher base frequency (3.5GHz vs 3.3GHz)