Xeon E 2478 's Advantages
Released 9 years and 7 months late
Higher specification of memory (4800 vs 1600)
Newer PCIe version (5 vs 3)
Larger L3 cache size (24MB vs 8MB)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (80W vs 84W)
Intel Xeon E3 1226 v3 's Advantages
Higher base frequency (3.3GHz vs 2.8GHz)