Xeon 6979P 's Advantages
Released 3 years late
Higher specification of memory (8800 vs 3200)
Newer PCIe version (5 vs 4)
Larger L3 cache size (504MB vs 16MB)
More modern manufacturing process (5nm vs 14nm)
Intel Xeon E 2378 's Advantages
Higher base frequency (2.6GHz vs 2.1GHz)
Lower TDP (65W vs 500W)