Xeon E 2478 's Advantages
Released 2 years and 8 months late
Higher specification of memory (4800 vs 2933)
Newer PCIe version (5 vs 3)
More modern manufacturing process (10nm vs 14nm)
Lower TDP (80W vs 190W)
Intel Xeon Platinum 8356H 's Advantages
Higher base frequency (3.9GHz vs 2.8GHz)
Larger L3 cache size (35.75MB vs 24MB)