Xeon E 2478 's Advantages
Released 10 years and 3 months late
Higher specification of memory (4800 vs 3)
Newer PCIe version (5 vs 3)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (80W vs 130W)
Intel Xeon E5 2690 v2 's Advantages
Higher base frequency (3GHz vs 2.8GHz)
Larger L3 cache size (25MB vs 24MB)