Xeon E 2478 's Advantages
Released 8 years and 6 months late
Higher specification of memory (4800 vs 2133)
Newer PCIe version (5 vs 3)
More modern manufacturing process (10nm vs 22nm)
Lower TDP (80W vs 135W)
Intel Xeon E5 4655 v3 's Advantages
Higher base frequency (2.9GHz vs 2.8GHz)
Larger L3 cache size (30MB vs 24MB)